CN103646783B - Bolt type aluminium electrolytic capacitor with high reliability and high temperature resistance - Google Patents
Bolt type aluminium electrolytic capacitor with high reliability and high temperature resistance Download PDFInfo
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- CN103646783B CN103646783B CN201310669601.7A CN201310669601A CN103646783B CN 103646783 B CN103646783 B CN 103646783B CN 201310669601 A CN201310669601 A CN 201310669601A CN 103646783 B CN103646783 B CN 103646783B
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- chaff
- cover plate
- fin
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Abstract
The invention relates to a bolt type aluminium electrolytic capacitor with high reliability and high temperature resistance. The capacitor comprises a capacitor element which is formed by folding and coiling a positive electrode foil on which a positive foil guide strip is fixed, a negative electrode foil on which a negative foil guide strip is fixed and first electrolytic paper. The capacitor is characterized in that the upper edge of the negative electrode foil extends upward to expose outside the upper surface of the capacitor element, an insulated structure is sleeved outside the positive foil guide strip, a heat radiation pin is arranged between the capacitor element and a cover plate, and both the negative foil guide strip and the positive foil guide strip pass through the heat radiation pin and then are connected with the corresponding cover plate terminals. The heat radiation performance of the bolt type aluminium electrolytic capacitor provided by the invention is greatly raised. In the actual use of the whole assembled machine, the surface temperature rise is less than 2 DEG C, a product with a service life of 3000 hours at 85 DEG C is raised to a service life of 6000 hours at 85 DEG C, a product with a service life of 3000 hours at 105 DEG C is raised to a service life of 6000 hours at 105 DEG C, and the product reliability is greatly improved.
Description
Technical field
The present invention relates to a kind of bolt-type aluminum electrolytic capacitor, belongs to aluminium electrolutic capacitor technical field.
Background technology
With the call that national energy-saving is reduced discharging, power supply, converter application it is more and more extensive, while power supply, converter
Competition is also more and more fierce, and Zheng Ji manufacturers are also proposed more to whole aircraft reliability while overall performance superiority is required
Carry out higher requirement.Aluminium electrolutic capacitor is one of most important part, traditional aluminium electrolutic capacitor in power supply and converter
Including outside aluminum hull, there is sub-prime in aluminum hull, be the cover plate of phenolic resin material at the top of aluminum hull, have cover plate end on the cover board
Son, sub-prime are just led chaff and negative lead chaff and be connected with respective cover plate terminal respectively.The manufacturing process of sub-prime is generally：Will just
Lead chaff and it is negative lead chaff and be individually placed in cathode foil and anode foil, then cold pressing riveting or punching and riveting, then with electrolysis
Paper is wound into core bag, as sub-prime together.Sub-prime is completed entirely through operations such as cover plate riveting, dry, impregnation, the vertical assemblings of group again
The making of aluminium electrolutic capacitor.At present, the cover plate material of aluminium electrolutic capacitor is phenolic resin, and the heat dispersion of the material is poor,
The integral heat sink ability of aluminium electrolutic capacitor is had a strong impact on so that the heat resistance of alminium electrolytic condenser is poor, and reliability is not enough.
In order to improve the radiating effect of alminium electrolytic condenser, following two methods are generally used at present：First method,
Anode foil is widened and extends to aluminum casing bottom, fixed with APP glue；Second method, anode foil widened extend to aluminum casing bottom,
A bolt is set up in aluminum casing bottom simultaneously so that sub-prime bottom is directly connected with aluminum hull.Although these methods can act as one
Fixed radiating effect, but much can not meet requirement.
The content of the invention
The technical problem to be solved in the present invention is to improve the heat resistance and reliability of aluminium electrolutic capacitor.
In order to solve above-mentioned technical problem, the technical scheme is that there is provided a kind of high reliability and resistant to elevated temperatures spiral shell
Bolt type aluminium electrolutic capacitor, including housing, are provided with capacitor element in housing, and capacitor element just lead chaff by being fixed with
Cathode foil, it is fixed with the negative anode foil and the first electrolytic paper for leading chaff and stacks winding and form, is provided with above capacitor element
Cover plate, cover plate are provided with cover plate terminal, capacitor element it is negative lead chaff and just leading chaff respectively with corresponding cover plate terminal phase
Even, cover plate place direction is defined as, housing bottom place direction is defined as down, it is characterised in that：The top of anode foil
Edge is upwardly extended so that the top edge of anode foil is at least concordant with the top edge of the first electrolytic paper, and just leading, chaff overcoat is useful
In guaranteeing just to lead the insulation system that chaff will not be directly contacted with anode foil, radiating is provided between capacitor element and cover plate
Piece, it is negative lead chaff and just leading chaff be connected with corresponding cover plate terminal through after fin respectively.
Preferably, the cover plate adopts heat-dissipating cover plate.
Preferably, the heat-dissipating cover plate is obtained by aluminum.
Preferably, the fin is obtained by aluminum.
Preferably, the insulation system or to be wrapped in second electrolytic paper just led outside chaff, or for winding parcel
In the electron level adhesive tape just led outside chaff, or while including the second electrolytic paper and electron level adhesive tape, the second electrolytic paper parcel
Just leading outside chaff described, electron level adhesive tape is wrapped in outside the second electrolytic paper.
Preferably, at least one louvre is provided with the fin.
Preferably, one is provided with the fin for negative the negative of chaff being led and leading chaff hole position and be used for through described
Through it is described just leading chaff just lead chaff grid, just leading that in chaff grid hole position correspondence at least is described just to lead paper tinsel
Bar.
Preferably, reinforcement is provided with the bottom of the cover plate, be provided with and match with reinforcement at the top of the fin
The draw-in groove of conjunction, reinforcement are snapped in draw-in groove.
The bolt-type aluminum electrolytic capacitor heat dispersion that the present invention is provided is greatly improved, compared to prior art, this product
Radiating is omnibearing, and radiating position includes aluminum casing bottom, aluminum hull side, fin, cover plate etc., and radiating mode is with heat loss through conduction
Based on, be aided with the mode of heat loss through radiation and heat loss through convection.Heat inside sub-prime is directly by anode foil cross conduction to aluminum hull
On, the conduction distance of heat is greatly reduced, product heat dispersion is greatly improved.In the installation of whole machine is actually used, its surface
Temperature rise is below 2 DEG C, and the surface temperature rise of product traditional under the same terms reaches 10 DEG C～11 DEG C；85 DEG C of products of 3000 hours
Product, its life-span bring up to 85 DEG C more than 6000 hours, 105 DEG C of 3000 hours its life-spans of product bring up to 105 DEG C 6000 hours with
On, product reliability is also greatly improved.
Description of the drawings
Fig. 1 be the present invention capacitor element, Aluminum cover, aluminium radiator fin three assembling after schematic diagram；
Fig. 2 is the capacitor element partial schematic diagram of the present invention；
Fig. 3 is the cover plate schematic diagram of the present invention；
Fig. 4 is the fin schematic diagram of the present invention.
Specific embodiment
To become apparent the present invention, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.In following reality
Apply in example, 4 place direction of aluminum cover plate is defined as, housing bottom place direction is defined as down.
Embodiment 1
As shown in figure 1, the present invention provides a kind of bolt-type aluminum electrolytic capacitor, including capacitor element 1, and with reference to Fig. 2, should
Capacitor element 1 by the first electrolytic paper, cold pressing riveting or punching and riveting has the negative anode foil for leading chaff 3, the first electrolytic paper, cold
It is riveted or punching and riveting has the cathode foil for just leading chaff 2 to stack gradually winding to form.Capacitor element 1 in the present invention with
The difference of existing capacitor element is that the top edge of anode foil is upwardly extended so as to expose the top edge of the first electrolytic paper
Height be H, H >=0 so that the internal heat of capacitor element 1 can conduct out with most short distance by anode foil.For
Heat is conducted out, a fin 7 is set in the top of capacitor element 1, in the present embodiment, the fin 7 is adopted
Aluminum is obtained, and in order to ensure properties of product, adopts the purity of aluminium for 99.99% in this example.As H=0, the top edge of anode foil
It is concordant with the top edge of the first electrolytic paper.The top edge of anode foil can also extend up to contact with fin 7 all the way up,
Now the value of H is maximum.After the top edge of anode foil is upwardly extended, just leading chaff 2 can be connected with the extension of anode foil
Touch, so as to cause short circuit, in order to avoid such case, an insulation system 6 is wrapped up in the appropriate location that chaff 2 is just being led per root,
Chaff 2 is just being led by the insulation system 6 to separate with anode foil, insulation effect is being played.Those skilled in the art, can adopt and appoint
The material that can insulate of meaning and combinations thereof is realizing the insulation system 6, such as electrolytic paper or electron level adhesive tape.In the present embodiment
In, in order to reach optimal insulation effect, meanwhile, for the ease of production, the insulation system 6 includes being wrapped in and just lead outside chaff 2
The second electrolytic paper and the electron level adhesive tape being wrapped in outside the second electrolytic paper.
Return to Fig. 1, just leading chaff 2 and it is negative lead chaff 3 through after fin 7 respectively with cover plate 4 on 5 phase of cover plate terminal
Even, as in housing, cover plate 4 is then covered at the top of housing so as to constitute bolt-type aluminum electrolytic capacitor capacitor element 1.
Embodiment 2
The present embodiment is that cover plate 4 adopts heat-dissipating cover plate with the difference of embodiment 1, and the heat-dissipating cover plate can adopt aluminum
, in order to ensure properties of product, the purity of aluminium being adopted in this example for 99.99%, its structure is as shown in figure 3, in 4 bottom of cover plate
There is the reinforcement 8 of H types.Now, the structure of fin 7 is as shown in figure 4, be provided with draw-in groove 9 thereon, reinforcement 8 snaps in draw-in groove 9
It is interior so that fin 7 easily can be assembled with cover plate 4, it is easy to production.There is one to bear on fin 7 and lead chaff hole position
11, it is easy to allow and all negative lead chaff 3 and passed through by the hole.Also have on fin 7 for just leading chaff grid through just lead chaff 2
12, just leading that in chaff grid 12 hole position correspondence one is described just to lead chaff 2.For increasing heat radiation area, can with
Increase louvre 10 on fin 7.
Claims (5)
1. a kind of high reliability and resistant to elevated temperatures bolt-type aluminum electrolytic capacitor, including housing, are provided with capacitor element in housing
Son（1）, capacitor element（1）Chaff just lead by being fixed with（2）Cathode foil, be fixed with and negative lead chaff（3）Anode foil and
One electrolytic paper stacks winding and forms, in capacitor element（1）Top be provided with cover plate（4）, cover plate（4）It is provided with cover plate terminal
（5）, capacitor element（1）Negative lead chaff（3）And just lead chaff（2）Respectively with corresponding cover plate terminal（5）It is connected, by cover plate
（4）Place direction is defined as, and housing bottom place direction is defined as down, it is characterised in that：In capacitor element（1）With lid
Fin is provided between plate（7）, it is negative to lead chaff（3）And just lead chaff（2）Through fin（7）Afterwards respectively with corresponding cover plate end
Son（5）It is connected, the top edge of anode foil is extended up to and fin all the way up（7）Contact, just leading chaff（2）It is cased with outward
For guaranteeing just to lead chaff（2）The insulation system that will not be directly contacted with anode foil（6）；
The cover plate（4）Using heat-dissipating cover plate；
In the fin（7）On be provided with least one louvre（10）；
In the fin（7）On be provided with one for negative leading chaff through described（3）Negative lead chaff hole position（11）Be used for
Chaff is being led just through described（2）Just lead chaff grid（12）, just leading chaff grid（12）In hole position correspondence at least
Chaff is being led described in root just（2）.
2. a kind of high reliability as claimed in claim 1 and resistant to elevated temperatures bolt-type aluminum electrolytic capacitor, it is characterised in that：Institute
State heat-dissipating cover plate to be obtained by aluminum.
3. a kind of high reliability as claimed in claim 1 and resistant to elevated temperatures bolt-type aluminum electrolytic capacitor, it is characterised in that：Institute
State fin（7）It 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, it is characterised in that：Institute
State insulation system（6）Or described chaff is just being led to be wrapped in（2）The second outer electrolytic paper, or be wrapped in for winding and described just leading paper tinsel
Bar（2）Outer electron level adhesive tape, or while including the second electrolytic paper and electron level adhesive tape, the second electrolytic paper is wrapped in described just leads
Chaff（2）Outward, electron level adhesive tape is wrapped in outside the second electrolytic paper.
5. a kind of high reliability as claimed in claim 1 and resistant to elevated temperatures bolt-type aluminum electrolytic capacitor, it is characterised in that：
The cover plate（4）Bottom be provided with reinforcement（8）, in the fin（7）Top be provided with and reinforcement（8）The card being engaged
Groove（9）, reinforcement（8）Snap in draw-in groove（9）It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310669601.7A CN103646783B (en) | 2013-12-10 | 2013-12-10 | Bolt type aluminium electrolytic capacitor with high reliability and high temperature resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310669601.7A CN103646783B (en) | 2013-12-10 | 2013-12-10 | Bolt type aluminium electrolytic capacitor with high reliability and high temperature resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103646783A CN103646783A (en) | 2014-03-19 |
| CN103646783B true CN103646783B (en) | 2017-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310669601.7A Active CN103646783B (en) | 2013-12-10 | 2013-12-10 | Bolt type aluminium electrolytic capacitor with high reliability and high temperature resistance |
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| Country | Link |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899208B (en) * | 2018-06-28 | 2023-10-31 | 常州华威电子有限公司 | Ultra-low-impedance compact patch electrolytic capacitor and preparation method thereof |
| CN112071644A (en) * | 2020-09-02 | 2020-12-11 | 张丽华 | Metallized polypropylene film capacitor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201336225Y (en) * | 2008-12-24 | 2009-10-28 | 佛山市三水日明电子有限公司 | Easy-radiating electrolytic capacitor |
| CN203013536U (en) * | 2013-01-08 | 2013-06-19 | 深圳江浩电子有限公司 | Aluminum electrolytic capacitor with firm structure |
| CN203103136U (en) * | 2013-01-24 | 2013-07-31 | 彭春燕 | Capacitor equipped with heat radiation device |
| CN203150397U (en) * | 2013-04-12 | 2013-08-21 | 深圳市瑞康电子有限公司 | Novel aluminum electrolytic capacitor with good heat resistance |
| CN203721499U (en) * | 2013-12-10 | 2014-07-16 | 上海一点点电子科技有限公司 | Bolt-type aluminum electrolytic capacitor with high reliability and high temperature resistance |
-
2013
- 2013-12-10 CN CN201310669601.7A patent/CN103646783B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201336225Y (en) * | 2008-12-24 | 2009-10-28 | 佛山市三水日明电子有限公司 | Easy-radiating electrolytic capacitor |
| CN203013536U (en) * | 2013-01-08 | 2013-06-19 | 深圳江浩电子有限公司 | Aluminum electrolytic capacitor with firm structure |
| CN203103136U (en) * | 2013-01-24 | 2013-07-31 | 彭春燕 | Capacitor equipped with heat radiation device |
| CN203150397U (en) * | 2013-04-12 | 2013-08-21 | 深圳市瑞康电子有限公司 | Novel aluminum electrolytic capacitor with good heat resistance |
| CN203721499U (en) * | 2013-12-10 | 2014-07-16 | 上海一点点电子科技有限公司 | Bolt-type aluminum electrolytic capacitor with high reliability and high temperature resistance |
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| Publication number | Publication date |
|---|---|
| CN103646783A (en) | 2014-03-19 |
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| 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: 20140805 |
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Effective date of registration: 20140805 Address after: 201406, No. 258, light Village Road, Yang Gong Industrial Zone, South Bridge Town, Shanghai, Fengxian District Applicant after: Shanghai Yongming Electronic Co., Ltd. Address before: 201406, No. 258, light Village Road, Yang Gong Industrial Park, South Bridge Town, Shanghai, Fengxian District Applicant before: Shanghai BIT Electronic Technology Co., Ltd. |
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Address after: 201406, No. 258, light Village Road, Yang Gong Industrial Zone, South Bridge Town, Shanghai, Fengxian District Patentee after: Shanghai Yongming electronic Limited by Share Ltd Address before: 201406, No. 258, light Village Road, Yang Gong Industrial Zone, South Bridge Town, Shanghai, Fengxian District Patentee before: Shanghai Yongming Electronic Co., Ltd. |
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