CN106783176A - Aluminium electrolutic capacitor - Google Patents
Aluminium electrolutic capacitor Download PDFInfo
- Publication number
- CN106783176A CN106783176A CN201611173520.8A CN201611173520A CN106783176A CN 106783176 A CN106783176 A CN 106783176A CN 201611173520 A CN201611173520 A CN 201611173520A CN 106783176 A CN106783176 A CN 106783176A
- Authority
- CN
- China
- Prior art keywords
- paillon foil
- negative
- outside wire
- pole paillon
- positive
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 37
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 16
- 239000004411 aluminium Substances 0.000 title claims abstract description 16
- 239000011888 foil Substances 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 238000006056 electrooxidation reaction Methods 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002344 surface layer Substances 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
- H01G9/008—Terminals
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The present invention relates to a kind of aluminium electrolutic capacitor, including shell, inner casing, joint filling material and core bag, joint filling material loads inner casing and forms sealing, inner casing and the supporting assembling of shell, core bag is arranged at inner housing inner, core bag includes electrolytic paper, positive pole paillon foil, negative pole paillon foil, positive outside wire and negative outside wire, the side of positive pole paillon foil and the side of negative pole paillon foil are connected with electrolytic paper respectively, positive outside wire is fixed on the opposite side of positive pole paillon foil, negative outside wire is fixed on the opposite side of negative pole paillon foil, the surface of negative outside wire is formed with the micropore of extended surface increase-volume, and form oxide-film.There is arcing when in use present invention, avoiding capacitor to puncture, so as to significantly improve the stability of capacitor application, increase service life.
Description
Technical field
The invention belongs to the technical field of capacitor, more particularly to a kind of aluminium electrolutic capacitor.
Background technology
As shown in figure 1, in existing aluminium electrolutic capacitor, positive and negative electrode paillon foil and electrolytic paper are directly connected to, then with drawing
Outlet is drawn, and in existing capacitor, in actual electrolytic capacitor, the electricity of anode storage is more great than the moon.
As shown in Fig. 2 in figure, Ca capacitances are made up of anode oxide film and the electrolytic paper of impregnation electrolyte；Ra can
To regard the insulaion resistance of anode oxide film as；Cc capacitances are made up of cathode oxidation film with the electrolytic paper of impregnation electrolyte
, Rc can be regarded as the insulaion resistance (Rc also includes the combined resistance of electrolyte and electrolytic paper) of cathode oxidation film.
When the circuit to Fig. 2 applies DC voltage V, the both end voltage of Ca, Cc is respectively Va and Vc, then have V=Va+
Vc, and Va/Vc=Ra/Rc.
In addition, in the ideal case, Va/Vc=Ra/Rc=Cc/Ca, at this moment anode and the electricity of negative electrode storage are equal, but
It is that anode oxide film is that Ra values are very high, and cathode oxidation film is very thin, Rc value very littles by special oxidation processes, therefore,
Ra/Rc ratios greatly, if at this moment want to allow Cc/Ca also obtain with Ra/Rc identical ratios, Cc values must extremely greatly,
All it is to meet following equation in existing capacitor：
Ra/Rc ＞ Cc/Ca, that is,：Va/Vc ＞ Cc/Ca, chemical conversion：Va*Ca ＞ Vc*Cc.
Because：Qa=Va*Ca；Qc=Vc*Cc, just obtains：Qa ＞ Qc.
This illustrates that in actual electrolytic capacitor the electricity of anode storage is bigger than negative electrode.
Therefore, actual capacitor storage electricity is just as shown in Figure 3：
At this moment, it is V volt (notes such as by charging voltage：To Flash capacitor, V values are DC voltages；Should to large ripple current
Capacitor, V values are ripple voltage peak values) capacitor shorted on both ends after (extremely discharge), as shown in figure 4, being formed
Two parallel forms of capacity C a and Cc：
Voltage between its two ends forms Vc ' due to discharging, and electric discharge is only carried out on the relatively small Qc of storing up electricity lotus, and
Qa-Qc is the electric charge for not discharging and remaining.
Therefore, residual voltage Vc ' is just determined that formula is as follows by Ca+Cc and Qa-Qc：
Formula 1：
From in terms of formula above, during electric discharge, the voltage (Vc ') being applied on cathode oxidation film may be very high (relative to about
The Natural Oxide Film of 1V is pressure-resistant), this can cause negative pole that oxidation reaction occurs, and capacitor internal is produced the bad phenomenons such as gas.
Therefore, in capacitor discharge, in order to there is no oxidation reaction, the pressure-resistant V ' on negative electrode Cc must is fulfilled for following formula 2：
Formula 2：
Because V=Va+Vc, formula 2 can further turn to formula 3：
Formula 3：
In electric discharge, even if being applied with voltage Vc ' on negative electrode, oxidation reaction will not also occur, in order to meet this wanting
Ask, formation voltage higher can be formed using the Cathode Foil of specific volume (Cc capacity is big) very high or on Cathode Foil, lead-out wire in advance
(Vc is big).Even if meeting such condition, voltage flashovers still finally can occur, reason is:Apply especially big in capacitor
When ripple current or the very big discharge and recharge of short time voltage difference, because the capacitance on the lead plate of capacitor anode or lead bar
(capacity per unit area) is very low, and according to formula 3, the Vc ' on lead plate or lead bar will be very high, that is, when discharging, Jiu Hui
High pressure is produced on lead plate or lead bar.This high pressure is reverse for negative pole, and with pulse feature.A period of time with
Afterwards, oxide-film can be increasingly generated on negative pole, capacitor internal gas is more and more, the suction hydrogen agent in electrolyte constantly absorbs.Knot
Fruit has two kinds of situations：One is especially big ripple current when starting so that Vc ' voltages are very high, and oxidation reaction is fierce to occur electricity quickly
Pressure arcing；Two to be ripple current more much greater than normal, increasingly generates oxide-film under Vc ' voltages, and prolonging over time
Long, the capacity C c of negative pole constantly declines, and Vc ' voltages constantly rise, and voltage flashovers occur after reaching certain critical point.
Current existing technical scheme is to increase connection capacity increasing device on negative pole lead, and although this method can solve the problem that
Negative pole arcing, but the complexity that can be increased manufacturing facilities.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of aluminium electrolutic capacitor, are not increasing existing equipment complexity
On the premise of, it is to avoid there is arcing when in use and puncture in capacitor.
The technical solution adopted for the present invention to solve the technical problems is to provide a kind of aluminium electrolutic capacitor, including shell,
Inner casing, joint filling material and core bag, the joint filling material load inner casing and form sealing, the inner casing and the supporting assembling of shell, described
Core bag is arranged at inner housing inner, and the core bag includes that electrolytic paper, positive pole paillon foil, negative pole paillon foil, positive outside wire and negative pole are drawn
Line, the side of the positive pole paillon foil and the side of negative pole paillon foil are connected with electrolytic paper respectively, and the positive outside wire is fixed on just
The opposite side of pole paillon foil, the negative outside wire is fixed on the opposite side of negative pole paillon foil, and the surface of the negative outside wire is formed
There is the micropore of extended surface increase-volume and form oxide-film.
As one kind of the invention preferred embodiment, the surface of the negative outside wire corrodes to form micro- by pure chemistry
Hole.
Used as another preferred embodiment of the present invention, the surface of the negative outside wire is formed by electrochemical corrosion
Micropore.
Used as another preferred embodiment of the present invention, the negative outside wire forms one by chemical conversion treatment on surface
Layer oxide-film.
Used as another preferred embodiment of the present invention, the positive pole paillon foil and negative pole paillon foil are attached to by being rolled up after riveting
On electrolytic paper.
Used as another preferred embodiment of the present invention, the positive pole paillon foil and negative pole paillon foil after Cold welding by rolling up
It is attached on electrolytic paper.
Used as another preferred embodiment of the present invention, the positive outside wire and negative outside wire are lead plate or draw
Lines.
Used as another preferred embodiment of the present invention, the positive outside wire and negative outside wire pass through Cold welding
It is connected with positive pole paillon foil and negative pole paillon foil respectively.
Beneficial effect
The present invention forms the micropore on surface by carrying out extended surface increase-volume treatment to negative outside wire, and is existed by chemical conversion treatment
Surface forms oxide-film, so as to reach the effect of stronger proof voltage, it is to avoid arcing occurs and punctures, should so as to significantly improve capacitor
Stability, increases service life.
Brief description of the drawings
Fig. 1 is the cut-away view of existing capacitor core bag.
Equivalent circuit diagram when Fig. 2 is capacitor charging/discharging.
Fig. 3 is the electricity figure of capacitor physical holding of the stock.
Fig. 4 is two parallel form figures of capacity C a and Cc.
Fig. 5 is structural representation of the invention.
Fig. 6 is the cut-away view of core bag of the present invention.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content for having read instruction of the present invention, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
A kind of aluminium electrolutic capacitor as shown in Figure 4 and Figure 5, including shell 1, inner casing 2, joint filling material 3 and core bag 4.Envelope
Gate material 3 loads inner casing 2 and forms sealing, inner casing 2 and the supporting assembling of shell 1, and core bag 4 is arranged inside inner casing 2.
Core bag 4 includes electrolytic paper 401, positive pole paillon foil 402, negative pole paillon foil 403, positive outside wire 404 and negative outside wire
405.The side of positive pole paillon foil 402 and the side of negative pole paillon foil 403 are connected with electrolytic paper 401 respectively, positive pole paillon foil 402 and negative pole
Paillon foil 403 is attached on electrolytic paper 401 by being rolled up after riveting or Cold welding.Positive outside wire 404 is fixed on positive pole paillon foil 402
Opposite side, negative outside wire 405 is fixed on the opposite side of negative pole paillon foil 403, positive outside wire 404 and negative outside wire 405
For lead plate or lead bar, positive outside wire 404 and negative outside wire 405 by Cold welding respectively with positive pole paillon foil 402 and
Negative pole paillon foil 403 is connected.
The surface of negative outside wire 405 is corroded by pure chemistry or electrochemical corrosion forms the micropore of extended surface increase-volume
Hole, so as to increased surface area.The surface of negative pole lead 405, by chemical conversion treatment, makes its surface shape by after extended surface increase-volume
Into layer oxide film, with proof voltage ability.By improvement above so as to avoid generation arcing from puncturing, so as to significantly improve electricity
The stability of container application, increases service life.
Claims (8)
1. a kind of aluminium electrolutic capacitor, including shell (1), inner casing (2), joint filling material (3) and core bag (4), the joint filling material
(3) load inner casing (2) and form sealing, the inner casing (2) and shell (1) supporting assembling, the core bag (4) is arranged at inner casing (2)
Inside, the core bag (4) including electrolytic paper (401), positive pole paillon foil (402), negative pole paillon foil (403), positive outside wire (404) and
Negative outside wire (405), the side of the positive pole paillon foil (402) and the side of negative pole paillon foil (403) respectively with electrolytic paper (401)
Connection, the positive outside wire (404) is fixed on the opposite side of positive pole paillon foil (402), and the negative outside wire (405) is fixed on
The opposite side of negative pole paillon foil (403), it is characterised in that：The surface of the negative outside wire (405) is formed with the micro- of extended surface increase-volume
Hole simultaneously forms oxide-film.
2. a kind of aluminium electrolutic capacitor according to claim 1, it is characterised in that：The table of the negative outside wire (405)
Corrode to form micropore by pure chemistry in face.
3. a kind of aluminium electrolutic capacitor according to claim 1, it is characterised in that：The table of the negative outside wire (405)
Face forms micropore by electrochemical corrosion.
4. a kind of aluminium electrolutic capacitor according to claim 1,2 or 3, it is characterised in that：The negative outside wire (405)
By chemical conversion treatment layer oxide film is formed on surface.
5. a kind of aluminium electrolutic capacitor according to claim 1, it is characterised in that：The positive pole paillon foil (402) and negative pole
Paillon foil (403) is attached on electrolytic paper (401) by volume after riveting.
6. a kind of aluminium electrolutic capacitor according to claim 1, it is characterised in that：The positive pole paillon foil (402) and negative pole
Paillon foil (403) is attached on electrolytic paper (401) by volume after Cold welding.
7. a kind of aluminium electrolutic capacitor according to claim 1, it is characterised in that：The positive outside wire (404) and negative
Pole lead-out wire (405) is lead plate or lead bar.
8. a kind of aluminium electrolutic capacitor according to claim 1, it is characterised in that：The positive outside wire (404) and negative
Pole lead-out wire (405) is connected with positive pole paillon foil (402) and negative pole paillon foil (403) respectively by Cold welding.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611173520.8A CN106783176A (en) | 2016-12-16 | 2016-12-16 | Aluminium electrolutic capacitor |
| PCT/CN2017/099761 WO2018107813A1 (en) | 2016-12-16 | 2017-08-30 | Aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611173520.8A CN106783176A (en) | 2016-12-16 | 2016-12-16 | Aluminium electrolutic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106783176A true CN106783176A (en) | 2017-05-31 |
Family
ID=58891171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611173520.8A Pending CN106783176A (en) | 2016-12-16 | 2016-12-16 | Aluminium electrolutic capacitor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106783176A (en) |
| WO (1) | WO2018107813A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516602A (en) * | 2017-08-16 | 2017-12-26 | 南通江海电容器股份有限公司 | A kind of impulse high voltage of resistance to transient overvoltage aluminium electrolutic capacitor and preparation method thereof |
| WO2018107813A1 (en) * | 2016-12-16 | 2018-06-21 | 南通江海电容器股份有限公司 | Aluminum electrolytic capacitor |
| CN111785522A (en) * | 2019-04-02 | 2020-10-16 | 特柏斯电子有限公司 | Sealing body for capacitor, method for manufacturing the same, and capacitor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6307733B1 (en) * | 1999-01-27 | 2001-10-23 | Nichicon Corporation | Aluminum electrolytic capacitor |
| CN1484260A (en) * | 2003-07-09 | 2004-03-24 | 深圳市东阳光化成箔股份有限公司 | Method for mfg negative electrode foil of aluminium electrolytic capacitor |
| CN101101816A (en) * | 2007-08-03 | 2008-01-09 | 朱健雄 | Aluminium electrolytic capacitor manufacture method |
| CN201138613Y (en) * | 2007-08-21 | 2008-10-22 | 南通江海电容器有限公司 | Aluminium electrolysis capacitor |
| CN102136369A (en) * | 2010-12-24 | 2011-07-27 | 东莞宏强电子有限公司 | High-voltage electrolytic capacitor with high capacity and long service life |
| CN205692703U (en) * | 2016-06-26 | 2016-11-16 | 天津翔龙电子有限公司 | A kind of aluminium electrolutic capacitor being easy to heat radiation |
| CN206349253U (en) * | 2016-12-16 | 2017-07-21 | 南通江海电容器股份有限公司 | Aluminium electrolutic capacitor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783176A (en) * | 2016-12-16 | 2017-05-31 | 南通江海电容器股份有限公司 | Aluminium electrolutic capacitor |
-
2016
- 2016-12-16 CN CN201611173520.8A patent/CN106783176A/en active Pending
-
2017
- 2017-08-30 WO PCT/CN2017/099761 patent/WO2018107813A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6307733B1 (en) * | 1999-01-27 | 2001-10-23 | Nichicon Corporation | Aluminum electrolytic capacitor |
| CN1484260A (en) * | 2003-07-09 | 2004-03-24 | 深圳市东阳光化成箔股份有限公司 | Method for mfg negative electrode foil of aluminium electrolytic capacitor |
| CN101101816A (en) * | 2007-08-03 | 2008-01-09 | 朱健雄 | Aluminium electrolytic capacitor manufacture method |
| CN201138613Y (en) * | 2007-08-21 | 2008-10-22 | 南通江海电容器有限公司 | Aluminium electrolysis capacitor |
| CN102136369A (en) * | 2010-12-24 | 2011-07-27 | 东莞宏强电子有限公司 | High-voltage electrolytic capacitor with high capacity and long service life |
| CN205692703U (en) * | 2016-06-26 | 2016-11-16 | 天津翔龙电子有限公司 | A kind of aluminium electrolutic capacitor being easy to heat radiation |
| CN206349253U (en) * | 2016-12-16 | 2017-07-21 | 南通江海电容器股份有限公司 | Aluminium electrolutic capacitor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018107813A1 (en) * | 2016-12-16 | 2018-06-21 | 南通江海电容器股份有限公司 | Aluminum electrolytic capacitor |
| CN107516602A (en) * | 2017-08-16 | 2017-12-26 | 南通江海电容器股份有限公司 | A kind of impulse high voltage of resistance to transient overvoltage aluminium electrolutic capacitor and preparation method thereof |
| WO2019033463A1 (en) * | 2017-08-16 | 2019-02-21 | 南通江海电容器股份有限公司 | High voltage aluminum electrolytic capacitor resisting transient overvoltage impact and preparation method therefor |
| CN111785522A (en) * | 2019-04-02 | 2020-10-16 | 特柏斯电子有限公司 | Sealing body for capacitor, method for manufacturing the same, and capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018107813A1 (en) | 2018-06-21 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |