CN203721499U - Bolt-type aluminum electrolytic capacitor with high reliability and high temperature resistance - Google Patents
Bolt-type aluminum electrolytic capacitor with high reliability and high temperature resistance Download PDFInfo
- Publication number
- CN203721499U CN203721499U CN201320812246.XU CN201320812246U CN203721499U CN 203721499 U CN203721499 U CN 203721499U CN 201320812246 U CN201320812246 U CN 201320812246U CN 203721499 U CN203721499 U CN 203721499U
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- CN
- China
- Prior art keywords
- chaff
- cover plate
- bolt
- leading
- type aluminum
- 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.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 49
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 47
- 239000011888 foil Substances 0.000 claims abstract description 27
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 239000002390 adhesive tape Substances 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 8
- 230000005855 radiation Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 238000004804 winding Methods 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The utility model relates to a bolt-type aluminum electrolytic capacitor with high reliability and high temperature resistance. The bolt-type aluminum electrolytic capacitor comprises a capacitor element. The capacitor element is formed through stacking and winding of a positive electrode foil equipped with a positive conduction chaff, a negative electrode foil equipped with a negative conduction chaff and first electrolytic paper. The bolt-type aluminum electrolytic capacitor is characterized in that, the upper edge of the negative electrode foil extends upwards and therefore the upper surface of the capacitor element is exposed; the positive conduction chaff is sleeved with an insulation structure; a radiating fin is arranged between the capacitor element and a cover plate; the negative conduction chaff and the positive conduction chaff go through the radiating fin and are connected with a corresponding cover plate terminal respectively. The heat radiation performance of the bolt-type aluminum electrolytic capacitor is raised greatly. During the complete machine installation actual use, the surface temperature rises by below 2 DEG C. The service life of a product with 3000 h at 85 DEG C is raised to more than 6000 h at 85 DEG C. The service life of a product with 3000 h at 105 DEG C is raised to more than 6000 h at 105 DEG C. The product reliability is raised greatly.
Description
Technical field
The utility model relates to a kind of bolt-type aluminum electrolytic capacitor, belongs to aluminium electrolytic capacitor technical field.
Background technology
Call along with national energy-saving reduction of discharging, the application of power supply, frequency converter is more and more extensive, the competition of power supply, frequency converter is simultaneously also more and more fierce, and complete machine manufacturer has also proposed more and more higher requirement to whole aircraft reliability when requiring overall performance superiority.Aluminium electrolytic capacitor is one of most important parts in power supply and frequency converter, traditional aluminium electrolytic capacitor comprises outside aluminum hull, in aluminum hull, there is sub-prime, aluminum hull top is the cover plate of phenolic resins material, on the cover board there is cover plate terminal, just the leading chaff and negative lead chaff and be connected with cover plate terminal separately respectively of sub-prime.The manufacturing process of sub-prime is generally: will just lead chaff and negative lead chaff and be placed on respectively in cathode foil and anode foil, then cold pressing riveted joint or punching and riveting are then wound into core bag together with electrolytic paper, are sub-prime.Sub-prime completes the making of whole aluminium electrolytic capacitor again through operations such as cover plate riveted joint, dry, impregnation, the vertical assemblings of group.At present, the cover plate material of aluminium electrolytic capacitor is phenolic resins, and the heat dispersion of this material is poor, has had a strong impact on the integral heat sink ability of aluminium electrolytic capacitor, makes the heat resistance of alminium electrolytic condenser poor, and reliability is not enough.
In order to improve the radiating effect of alminium electrolytic condenser, what adopt at present conventionally is following two methods: first method, anode foil is widened and extended to aluminum casing bottom, with APP glue, fix; Second method, anode foil is widened and extended to aluminum casing bottom, at aluminum casing bottom, set up a bolt, sub-prime bottom is directly connected with aluminum hull simultaneously.Although these methods can play certain radiating effect, can not meet requirement far away.
Summary of the invention
The technical problems to be solved in the utility model is to improve heat resistance and the reliability of aluminium electrolytic capacitor.
In order to solve the problems of the technologies described above, the technical solution of the utility model has been to provide a kind of high reliability and resistant to elevated temperatures bolt-type aluminum electrolytic capacitor, comprise housing, in housing, be provided with capacitor element, capacitor element is by being fixed with the cathode foil of just leading chaff, being fixed with the negative anode foil of leading chaff and the first electrolytic paper stacks to reel and forms, above capacitor element, be provided with cover plate, cover plate is provided with cover plate terminal, capacitor element negative led chaff and just leading chaff and be connected with corresponding cover plate terminal respectively, cover plate place direction is defined as, housing bottom place direction is defined as down, it is characterized in that: the top edge of anode foil extends upward, make the top edge of anode foil at least concordant with the top edge of the first electrolytic paper, be useful on and guarantee just to lead the insulation system that chaff can directly not touch with anode foil just leading chaff overcoat, between capacitor element and cover plate, be provided with fin, bear to lead chaff and just leading chaff and be connected with corresponding cover plate terminal respectively through after fin.
Preferably, described cover plate adopts heat-dissipating cover plate.
Preferably, described heat-dissipating cover plate is obtained by aluminum.
Preferably, described fin is obtained by aluminum.
Preferably, described insulation system or for being wrapped in described the second electrolytic paper of just leading outside chaff, or be wrapped in described electron level adhesive tape of just leading outside chaff for being wound around, or comprise the second electrolytic paper and electron level adhesive tape simultaneously, the second electrolytic paper is wrapped in described just leading outside chaff, and electron level adhesive tape is wrapped in outside the second electrolytic paper.
Preferably, on described fin, have at least one louvre.
Preferably, on described fin, have one for through described negative lead chaff negative lead position, chaff hole and for through described just leading chaff just lead chaff grid, just leading the corresponding at least one described chaff of just leading in position, a hole in chaff grid.
Preferably, in the bottom of described cover plate, be provided with reinforcement, be provided with the draw-in groove matching with reinforcement at the top of described fin, reinforcement snaps in draw-in groove.
The bolt-type aluminum electrolytic capacitor heat dispersion that the utility model provides improves greatly, than prior art, the heat radiation of this product is omnibearing, heat radiation position comprises aluminum casing bottom, aluminum hull side, fin, cover plate etc., and radiating mode be take heat loss through conduction as the main and auxiliary mode with heat loss through radiation and heat loss through convection.The heat of sub-prime inside directly passes through anode foil cross conduction to aluminum hull, has greatly reduced the conduction distance of heat, and product heat dispersion improves greatly.In the actual use of complete machine installation, its surface temperature rise is below 2 ℃, and under the same terms, the surface temperature rise of traditional product reaches 10 ℃～11 ℃; 85 ℃ of products of 3000 hours, its life-span is brought up to 85 ℃ more than 6000 hours, and 105 ℃ of 3000 hours its life-spans of product are brought up to 105 ℃ more than 6000 hours, and product reliability also improves greatly.
Accompanying drawing explanation
Fig. 1 is the schematic diagram after capacitor element of the present utility model, Aluminum cover, aluminium radiator fin three assembling;
Fig. 2 is capacitor element part schematic diagram of the present utility model;
Fig. 3 is cover plate schematic diagram of the present utility model;
Fig. 4 is fin schematic diagram of the present utility model.
Embodiment
For the utility model is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.In following examples, aluminum cover plate 4 place directions are defined as, housing bottom place direction is defined as down.
Embodiment 1
As shown in Figure 1, the utility model provides a kind of bolt-type aluminum electrolytic capacitor, comprise capacitor element 1, in conjunction with Fig. 2, this capacitor element 1 by the first electrolytic paper, cold pressing riveted joint or punching and riveting have negative anode foil, the first electrolytic paper of leading chaff 3, cold pressing riveted joint or punching and riveting have the cathode foil of just leading chaff 2 to stack gradually to reel to form.Capacitor element 1 in the utility model is with the difference of existing capacitor element, the top edge of anode foil extends upward, the height that makes its top edge that exposes the first electrolytic paper is H, and H >=0 makes the internal heat of capacitor element 1 with the shortest distance, to conduct out by anode foil.For heat is conducted out, a fin 7 is set above capacitor element 1, in the present embodiment, this fin 7 adopts aluminum to obtain, and in order to guarantee properties of product, the purity that adopts aluminium in this example is 99.99%.When H=0, the top edge of anode foil is concordant with the top edge of the first electrolytic paper.The top edge of anode foil can also extend upward until contact with fin 7 always, and now the value of H is maximum.After the top edge of anode foil extends upward, just leading chaff 2 can contact with the extension of anode foil, thereby cause short circuit, for fear of this situation, every appropriate location of just leading chaff 2, all wrap up an insulation system 6, by this insulation system 6, will just lead chaff 2 and separate with anode foil, play insulation effect.Those skilled in the art, can adopt material and the combination thereof that can insulate arbitrarily to realize this insulation system 6, for example electrolytic paper or electron level adhesive tape.In the present embodiment, in order to reach best insulation effect, meanwhile, for the ease of producing, this insulation system 6 comprises being wrapped in just leads the second electrolytic paper outside chaff 2 and is wrapped in the electron level adhesive tape outside the second electrolytic paper.
Get back to Fig. 1, just leading chaff 2 and the negative chaff 3 of leading is connected with the cover plate terminal 5 on cover plate 4 respectively through fin 7 is rear, capacitor element 1 is as in housing, thereby 4 of cover plates cover at the top of housing and formed bolt-type aluminum electrolytic capacitor.
Embodiment 2
The difference of the present embodiment and embodiment 1 is, cover plate 4 employing heat-dissipating cover plates, and this heat-dissipating cover plate can adopt aluminum to obtain, in order to guarantee properties of product, the purity that adopts aluminium in this example is 99.99%, and its structure as shown in Figure 3, has the reinforcement 8 of H type in cover plate 4 bottoms.Now, the structure of fin 7 as shown in Figure 4, is provided with draw-in groove 9 thereon, and reinforcement 8 snaps in draw-in groove 9, and fin 7 and cover plate 4 can be assembled easily, is convenient to produce.On fin 7, there is one negative to lead position, chaff hole 11, be convenient to allow and allly negatively lead chaff 3 and passed by this hole.On fin 7, be also useful on and just lead chaff grid 12 through what just lead chaff 2, just leading the corresponding described chaff 2 of just leading in position, a hole in chaff grid 12.For increasing heat radiation area, can also on fin 7, increase louvre 10.
Claims (8)
1. a high reliability and resistant to elevated temperatures bolt-type aluminum electrolytic capacitor, comprise housing, in housing, be provided with capacitor element (1), capacitor element (1) is by being fixed with the cathode foil of just leading chaff (2), being fixed with the negative anode foil of leading chaff (3) and the first electrolytic paper stacks to reel and forms, in the top of capacitor element (1), be provided with cover plate (4), cover plate (4) is provided with cover plate terminal (5), capacitor element (1) negative led chaff (3) and just leading chaff (2) and be connected with corresponding cover plate terminal (5) respectively, cover plate (4) place direction is defined as, housing bottom place direction is defined as down, it is characterized in that: the top edge of anode foil extends upward, make the top edge of anode foil at least concordant with the top edge of the first electrolytic paper, be useful on and guarantee just to lead the insulation system (6) that chaff (2) can directly not touch with anode foil just leading chaff (2) overcoat, between capacitor element (1) and cover plate, be provided with fin (7), bear to lead chaff (3) and just leading chaff (2) and be connected with corresponding cover plate terminal (5) respectively through after fin (7).
2. a kind of high reliability as claimed in claim 1 and resistant to elevated temperatures bolt-type aluminum electrolytic capacitor, is characterized in that: described cover plate (4) adopts heat-dissipating cover plate.
3. a kind of high reliability as claimed in claim 2 and resistant to elevated temperatures bolt-type aluminum electrolytic capacitor, is characterized in that: described heat-dissipating cover plate is obtained by aluminum.
4. a kind of high reliability as claimed in claim 1 and resistant to elevated temperatures bolt-type aluminum electrolytic capacitor, is characterized in that: described fin (7) is obtained by aluminum.
5. a kind of high reliability as claimed in claim 1 and resistant to elevated temperatures bolt-type aluminum electrolytic capacitor, it is characterized in that: described insulation system (6) or for being wrapped in described the second outer electrolytic paper of chaff (2) of just leading, or be wrapped in the described outer electron level adhesive tape of chaff (2) of just leading for being wound around, or comprise the second electrolytic paper and electron level adhesive tape simultaneously, the second electrolytic paper is wrapped in described just leading outside chaff (2), and electron level adhesive tape is wrapped in outside the second electrolytic paper.
6. a kind of high reliability as claimed in claim 1 and resistant to elevated temperatures bolt-type aluminum electrolytic capacitor, is characterized in that: on described fin (7), have at least one louvre (10).
7. a kind of high reliability as claimed in claim 1 and resistant to elevated temperatures bolt-type aluminum electrolytic capacitor, it is characterized in that: on described fin (7), have one for through described negative lead chaff (3) negative lead position, chaff hole (11) and for through described just leading chaff (2) just lead chaff grid (12), just leading the corresponding at least one described chaff (2) of just leading in position, a hole in chaff grid (12).
8. a kind of high reliability as claimed in claim 1 and resistant to elevated temperatures bolt-type aluminum electrolytic capacitor, it is characterized in that: in the bottom of described cover plate (4), be provided with reinforcement (8), at the top of described fin (7), be provided with the draw-in groove (9) matching with reinforcement (8), reinforcement (8) snaps in draw-in groove (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320812246.XU CN203721499U (en) | 2013-12-10 | 2013-12-10 | Bolt-type aluminum electrolytic capacitor with high reliability and high temperature resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320812246.XU CN203721499U (en) | 2013-12-10 | 2013-12-10 | Bolt-type aluminum electrolytic capacitor with high reliability and high temperature resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203721499U true CN203721499U (en) | 2014-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320812246.XU Expired - Lifetime CN203721499U (en) | 2013-12-10 | 2013-12-10 | Bolt-type aluminum electrolytic capacitor with high reliability and high temperature resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203721499U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646783A (en) * | 2013-12-10 | 2014-03-19 | 上海一点点电子科技有限公司 | Bolt type aluminium electrolytic capacitor with high reliability and high temperature resistance |
-
2013
- 2013-12-10 CN CN201320812246.XU patent/CN203721499U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646783A (en) * | 2013-12-10 | 2014-03-19 | 上海一点点电子科技有限公司 | Bolt type aluminium electrolytic capacitor with high reliability and high temperature resistance |
| CN103646783B (en) * | 2013-12-10 | 2017-04-19 | 上海永铭电子有限公司 | Bolt type aluminium electrolytic capacitor with high reliability and high temperature resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI YONGMING ELECTRONICS CO., LTD. Free format text: FORMER OWNER: SHANGHAI BIT ELECTRONIC TECHNOLOGY CO., LTD. Effective date: 20140804 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140804 Address after: 201406, No. 258, light Village Road, Yang Gong Industrial Park, South Bridge Town, Shanghai, Fengxian District Patentee after: SHANGHAI YONGMING ELECTRONIC Co.,Ltd. Address before: 201406, No. 258, light Village Road, Yang Gong Industrial Park, South Bridge Town, Shanghai, Fengxian District Patentee before: SHANGHAI BIT ELECTRONIC TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201406, No. 258, light Village Road, Yang Gong Industrial Park, South Bridge Town, Shanghai, Fengxian District Patentee after: SHANGHAI YONGMING ELECTRONIC CO.,LTD. Address before: 201406, No. 258, light Village Road, Yang Gong Industrial Park, South Bridge Town, Shanghai, Fengxian District Patentee before: SHANGHAI YONGMING ELECTRONIC Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |