CN102637534A - High-temperature long-service-life large-sized aluminum electrolytic capacitor and manufacturing method thereof - Google Patents
High-temperature long-service-life large-sized aluminum electrolytic capacitor and manufacturing method thereof Download PDFInfo
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- CN102637534A CN102637534A CN201210103604XA CN201210103604A CN102637534A CN 102637534 A CN102637534 A CN 102637534A CN 201210103604X A CN201210103604X A CN 201210103604XA CN 201210103604 A CN201210103604 A CN 201210103604A CN 102637534 A CN102637534 A CN 102637534A
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Abstract
The invention discloses a high-temperature long-service-life large-sized aluminum electrolytic capacitor and a manufacturing method thereof. The large-sized aluminum electrolytic capacitor comprises a cell main body, a shell and a cover plate, wherein the cell main body is of a hollow structure and comprises a positive pole plate, a negative pole plate, electrolytic paper between the positive pole plate and the negative pole plate, lugs respectively leading out of the positive pole plate and the negative pole plate, as well as electrolyte among the positive pole plate, the negative pole plate and the electrolytic paper. Since the cell main body is of the hollow structure, small thermal impedance is produced and the heat radiation property of the capacitor is improved, so that the high-temperature long-service-life large-sized aluminum electrolytic capacitor has the advantages of excellent heat radiation property, high temperature resistance, stability and reliability, explosion prevention and long service life.
Description
Technical field
The invention belongs to the aluminium electrolytic capacitor technical field, relate in particular to a kind of high temperature resistant, long-life large-scale aluminum electrolysis capacitor and method for making thereof that can be used for high-power electric appliance equipment.
Background technology
Capacitor is an energy-storage travelling wave tube, and this should not have power loss, but the existence of equivalent series resistance makes ripple current produce remarkable loss in the above.This part loss will come out with the form of heat energy, causes that the capacitor temperature rises.The loss meeting that produces except ripple current causes that capacitor heats up, and the leakage current loss can cause that also capacitor heats up.The intensification harm that the capacitor heating causes is serious, and therefore, each producer allows temperature rise that strict restriction is all arranged to its maximum, and general producer has provided electrolytic capacitor and has been operated in the maximum permission temperature rise under the specified temp for the user is easy to use.Yet the heating problem of capacitor but is can't avoid and endanger to dark problem during electrolytic capacitor uses always, and there are numerous harm in it.The heating of electrolytic capacitor can be accelerated the consumption of electrolyte and dry, even causes the boiling of electrolyte, and the aluminum current electrolytic capacitor is mostly because of adopting inflammable organic acid electrolyte, so and then brought bigger safety problem such as inflammable and explosive easily.The heating of electrolytic capacitor also can reduce the ability to bear of ripple current, the useful life of rapid shortening capatcitor, and make the electrolytic capacitor leakage current increase, loss increases, and produces harm such as instantaneous overtemperature.
Present aluminium electrolytic capacitor electricity core is solid construction; Like the disclosed capacitor of Chinese patent 201020269753.X; Include the core bag of solid construction and the aluminum hull that coats the core bag; The heat that capacitor produces only can be distributed through aluminum hull, and area of dissipation and heat sinking function are bad, and capacitor heat generating core bag expands and causes danger easily.Heating is a very important factor during electrolytic capacitor uses, and particularly is applied to the large-scale aluminum electrolysis capacitor of high-power electric appliance equipment, and its heating is more, and present aluminium electrolytic capacitor poor radiation.
So, need a kind of scheme that provides badly, have the bad problem of aluminium electrolytic capacitor thermal diffusivity now to solve, and then a kind of high temperature resistant, long-life large-scale aluminum electrolysis capacitor that can be used for high-power electric appliance equipment is provided.
Summary of the invention
The object of the present invention is to provide good, high temperature resistant, long-life large-scale aluminum electrolysis capacitor of a kind of thermal diffusivity and method for making thereof.
For realizing above-mentioned purpose, technical scheme of the present invention is:
A kind of high temperature resistant, long-life large-scale aluminum electrolysis capacitor, high temperature resistant, long-life large-scale aluminum electrolysis capacitor includes electric core main body, shell and cover plate; Wherein, said electric core main body is arranged to hollow-core construction, and it includes the electrolytic paper between positive plate, negative plate, the positive/negative plate, the lug sheet of drawing from positive/negative plate respectively; Said hollow-core construction is a through hole that is provided with along the capacitor central axis.
Further, said through hole is a cylindrical through-core hole.
Further; Said shell is used for packet receiving and covers the electric core main body that this has hollow-core construction; It includes the hollow pipe of a perforation, forms one between the housing of said hollow pipe and shell and accommodates cavity, and said electric core main body is installed in this host cavity; Said hollow pipe inserts in the cylindrical through-core hole of electric core main body, the outer wall of hollow pipe and the tight contact matching of the inwall of through-core hole.
Further, said hollow pipe is cylindrical; Said shell one end is opening-like, after electric core main body is contained in the host cavity of shell, again cover plate is installed on this opening, the opening of corresponding shell hollow pipe, and said cover plate is provided with circular hole in the corresponding position.
Further, said lug sheet is drawn from electric core electrode, and lug is divided into two groups or N group, and each organizes lug is the summit with electric core central point, and lug forms complete deriving structure through being connected with the leading-out terminal of encapsulation cover plate.
Further, be adsorbed with electrolyte in the gap of said pole plate, electrolytic paper and lug sheet.
Another technical scheme of the present invention is:
A kind of manufacturing approach of high temperature resistant, long-life large-scale aluminum electrolysis capacitor comprises the steps:
S10: the positive/negative plate and the lug sheet of preparation capacitor;
S11: reel: the positive/negative plate electrolytic paper is reeled, process electric core main body;
Wherein, adopt big volume core spool during coiling, positive/negative plate, electrolytic paper turn to cylindric around big volume core spool, extract big volume core spool then out, form a through hole in the axis centre of cylindric electric core main body;
S12: the shell of preparation capacitor is used to coat said electric core main body;
Wherein, the hollow pipe of a perforation is set on said shell, is provided with one between the housing of this hollow pipe and shell and accommodates cavity, to place electric core main body;
S13: preparation cover plate:, one circular hole is set in the correspondence position of cover plate corresponding to the hollow pipe of said shell.
Further, the internal diameter of the external diameter of said hollow pipe and electric core main body through hole is suitable; Said electric core main body is installed in this host cavity, and hollow pipe inserts in the through hole of electric core main body, and the outer wall of hollow pipe and the inwall of through hole closely cooperate.
Further, said big volume core spool is cylindrical, and diameter is at least 0.8cm.
In the embodiment of the present invention's creation; Through electric core main body is arranged to hollow-core construction; Improved the heat dispersion of capacitor, feasible good, high temperature resistant and safe and reliable, explosion-proof, the long service life of this high temperature resistant, long-life large-scale aluminum electrolysis capacitor thermal diffusivity.Simultaneously, insert through hollow pipe in the through hole of electric core main body, can fix electric core main body and need not to use again gel sets; In addition, through the use of big volume core spool, the degree of crook of aluminium foil is reduced much during manufacturing, protect anodal oxide-film not to be bent be full of cracks relatively and destroyed, thereby the electric leakage situation can be changed in control range when high temperature.
Description of drawings
Fig. 1 is that the present invention is high temperature resistant, the structural diagrams of the electric core of long-life large-scale aluminum electrolysis capacitor.
Fig. 2 is that the present invention is high temperature resistant, the structural diagrams of the shell of long-life large-scale aluminum electrolysis capacitor.
Fig. 3 is that the present invention is high temperature resistant, the structure of cover plate of long-life large-scale aluminum electrolysis capacitor diagram.
Fig. 4 is that the present invention is high temperature resistant, the unsealing of long-life large-scale aluminum electrolysis capacitor seals the combination diagram.
Fig. 5 is that the present invention is high temperature resistant, another angle diagram the when structure of long-life large-scale aluminum electrolysis capacitor is intact.
Embodiment
For the purpose, technical scheme and the advantage that make this creation is clearer,, this creation is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In description of the invention; It will be appreciated that; Term " on ", the orientation of indications such as D score, " preceding ", " back ", " interior ", " outward " or position relation be for based on orientation shown in the drawings or position relation; Only be to describe with simplifying for the ease of describing the present invention, rather than the device or the element of indication or hint indication must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " only are used to describe purpose, and can not be interpreted as indication or hint relative importance.
In description of the invention, need to prove that only if clear and definite regulation and qualification are arranged in addition, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be to be fixedly connected, connect integratedly, also can be to removably connect; It can be the connection of two element internals; Can be directly to link to each other, also can link to each other indirectly, for those of ordinary skill in the art, can concrete condition understand above-mentioned term concrete implication in the present invention through intermediary.
The present invention is high temperature resistant, long-life large-scale aluminum electrolysis capacitor can be used for powerful electric equipment, and like wind electric converter, equipment such as high voltage converter play the energy storage discharge, level and smooth effect.Compare with the aluminium electrolytic capacitor of traditional structure, it has the improvement of great-leap-forward on long-life, high temperature resistant, stability.
Shown in Fig. 1-4, this creation is high temperature resistant, long-life large-scale aluminum electrolysis capacitor includes electric core main body 1, shell 2 and cover plate 3.Wherein, said electric core main body 1 is arranged to hollow-core construction, and it includes the electrolytic paper between positive plate, negative plate, the positive/negative plate, the lug sheet 10 of drawing from positive/negative plate respectively.Said positive plate, negative plate, electrolytic paper are wound into cylindric, process electric core main body 1, and said hollow-core construction is along the central axis setting of cylindric electric core main body.Be adsorbed with electrolyte in the gap of said pole plate, electrolytic paper and lug sheet.
Said hollow-core construction is for connecting a through hole 11 of cylindric electric core main center axis, and in the present embodiment, said through hole 11 is a cylindrical through-core hole.
Said shell 2 is used to accommodate said electric core main body 1 with hollow-core construction, and it includes the hollow pipe 20 that connects, and formation one annulus bottom surface, two round surface side wall constructions accommodates cavity 23 between the housing 21 of said hollow pipe 20 and shell 2.Wherein, the internal diameter of the external diameter of said hollow pipe 20 and through hole 11 is suitable.Said electric core main body 1 is installed in this host cavity 23, and said hollow pipe 20 inserts in the through hole 11 of electric core main body 1, and the inwall of the outer wall of hollow pipe 20 and through hole 11 closely cooperates.In the present embodiment, said hollow pipe 20 is cylindrical.Said shell 2 one ends are opening-like, after electric core main body is contained in the host cavity of shell, again cover plate 3 are installed on this opening 24, the opening of corresponding shell hollow pipe, and said cover plate 3 is provided with circular hole 30 in correspondence position.
Said electric core main body 1, shell 2 and cover plate 3 are assembled in high temperature resistant, long-life large-scale aluminum electrolysis capacitor that back together constitutes this creation.With reference to shown in Figure 5, this is high temperature resistant, be formed centrally a through hole 11 in long-life large-scale aluminum electrolysis capacitor.During application, this large-scale aluminum electrolysis capacitor is connected with external circuit through the terminal on the cover plate 3, is vertical placement; The through hole 11 at capacitor center is vertical shape, and according to the principle of expanding with heat and contract with cold, the air-flow that the heat that capacitor distributes drives in through hole 11 in the through hole upwards flows; Outside then cold air is come in from via bottoms; Form the convection current of air, thereby make air-flow in the through hole form flowing from bottom to top, and then reach the purpose of capacitor heat radiation.
In addition, a condenser pipe or other condensing units can be set in the through hole 11 of capacitor also, and then reach purpose, to prolong life of capacitors to the capacitor heat radiation.
Said lug sheet 10 is drawn from electric core electrode; Lug is divided into two groups or N group, and every single-row group is that some lug relative spacings rearrange, and lug plays the effect of drawing of electric core electrode; Each organizes lug is the summit with electric core central point; Form angle (material of apparent capacity device, electrical characteristics change the angular dimension of angle) at any angle, lug forms complete deriving structure through being connected with the leading-out terminal of encapsulation cover plate.Lug and electric core through mould Cold welding up and down together, golden type contact resistance is minimum.Cell polar ear is connected with capacitor seal cover board rivet; Connected mode can be that acanthopore turns over riveting and fusion weld form, after combining electric core main body is positioned in the special type metal-back the fixing electric core of (like the figure metal-back) jar glue and does not get loose, rotates after the complete capacitor arrangement of formation after packaging machine processing aluminum hull crimping and the moulding of waist shoulder.
The present invention is high temperature resistant, the method for making of long-life large-scale aluminum electrolysis capacitor comprises the steps:
S10: the positive/negative plate and the lug sheet of preparation capacitor;
S11: reel: the positive/negative plate electrolytic paper is reeled, process electric core main body.
Wherein, adopt big volume core spool during coiling, positive/negative plate, electrolytic paper turn to cylindric around big volume core spool, extract big volume core spool then out, form a through hole in the axis centre of cylindric electric core main body.
In embodiments of the present invention, said big volume core spool is cylindrical, and diameter is at least 0.8cm, and said through hole runs through electric core main body, is a cylindrical through-core hole.
S12: the shell of preparation capacitor is used to coat said electric core main body.
Said shell is an aluminum hull, and it is provided with the hollow pipe 20 of a perforation, forms one between the housing 21 of said hollow pipe 20 and shell 2 and accommodates cavity 23, to place electric core main body.Wherein, the internal diameter of the external diameter of said hollow pipe 20 and electric core main body through hole 11 is suitable.Said electric core main body 1 is installed in this host cavity 23, and said hollow pipe 20 inserts in the through hole 11 of electric core main body 1, and the inwall of the outer wall of hollow pipe 20 and through hole 11 closely cooperates.In the present embodiment, corresponding to the shape of through hole 11, said hollow pipe 20 is cylindrical.Said shell 2 one ends are arranged to the opening shape, and electric core main body is installed in the host cavity of shell from this opening part.
S13: preparation cover plate:, one circular hole 30 is set in the correspondence position of cover plate corresponding to the hollow pipe of said shell.
Among the present invention; Electricity core high pressure under vacuum condition is injected with the electrolyte of uniform temperature; The aluminum hull that the saturated back electric core of fluid injection is put into through-hole structure entangle fixing after; The aluminum hull sidewall is extruded with mechanical continuous shaping method and is dragged the shoulder pattern to hold the cover plate lower surface, round as a ball arc crisperding of aluminum hull opening edge and cover plate top surface edge position tension then, and good colloid pad is made seal, physical buffer is used wherein air-tightness to be arranged between aluminum hull and the cover plate.After the electric core main body of electric capacity is contained in the host cavity of shell, cover plate 3 is installed on the opening 24 of shell, the circular hole on the said cover plate matches with shell hollow pipe top.
With reference to shown in Figure 5, this creation is high temperature resistant, long-life large-scale aluminum electrolysis capacitor is whole is pipe dress pattern, the heat expansion that the air in the through-core hole is distributed by electric capacity; Form air flow; Because atmospheric effect, hot-air flows direction for from bottom to top in the through hole of electric capacity in the middle of when upright the installation, forms wind-tunnel alive; Can quicken local air flow after forming wind-tunnel, thereby realize the wind-tunnel heat radiation.Because the characteristics of contour structures; When the inner accumulate electricity of making core, adopt the big core spool of rolling up to process, the volume core of the electric core in the fixing back of moulding is just in time inlayed on cover and the punching aluminum hull inwall; So both can fix electric core; Can let electric core better dispel the heat again, this structure can be without gel sets, and the heat radiation thermal resistance is about 1/3 of traditional same specification capacitor thermal resistance.In addition, the use of big spool can make the degree of crook of aluminium foil reduce a lot, has protected anodal oxide-film not to be bent be full of cracks relatively and has destroyed, thereby the electric leakage situation can be changed in control range at high temperature.
This creation is high temperature resistant, long-life large-scale aluminum electrolysis capacitor can be used for powerful electric equipment; Play the energy storage discharge, smoothing effect is such as wind electric converter; High voltage converter; DC compensation, fields such as voltage stabilizing have significant improvement than the aluminium electrolytic capacitor of traditional structure on long-life, high temperature resistant, stability.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. high temperature resistant, long-life large-scale aluminum electrolysis capacitor; Include electric core main body, shell and cover plate; It is characterized in that: said electric core main body is arranged to hollow-core construction, and it includes the electrolytic paper between positive plate, negative plate, the positive/negative plate, the lug sheet of drawing from positive/negative plate respectively; Said hollow-core construction is a through hole that is provided with along the capacitor central axis.
2. high temperature resistant, long-life large-scale aluminum electrolysis capacitor as claimed in claim 1 is characterized in that: said through hole is a cylindrical through-core hole.
3. high temperature resistant, long-life large-scale aluminum electrolysis capacitor as claimed in claim 2; It is characterized in that: said shell is used for packet receiving and covers the electric core main body that this has hollow-core construction; It includes the hollow pipe of a perforation, forms one between the housing of said hollow pipe and shell and accommodates cavity, and said electric core main body is installed in this host cavity; Said hollow pipe inserts in the cylindrical through-core hole of electric core main body, the outer wall of hollow pipe and the tight contact matching of the inwall of through-core hole.
4. high temperature resistant, long-life large-scale aluminum electrolysis capacitor as claimed in claim 3, it is characterized in that: said hollow pipe is cylindrical; Said shell one end is opening-like, after electric core main body is contained in the host cavity of shell, again cover plate is installed on this opening, the opening of corresponding shell hollow pipe, and said cover plate is provided with circular hole in the corresponding position.
5. high temperature resistant, long-life large-scale aluminum electrolysis capacitor as claimed in claim 4; It is characterized in that: said lug sheet is drawn from electric core electrode; Lug is divided into two groups or N group; Each organizes lug is the summit with electric core central point, and lug forms complete deriving structure through being connected with the leading-out terminal of encapsulation cover plate.
6. high temperature resistant, long-life large-scale aluminum electrolysis capacitor as claimed in claim 5 is characterized in that: be adsorbed with electrolyte in the gap of said pole plate, electrolytic paper and lug sheet.
7. the manufacturing approach of high temperature resistant, a long-life large-scale aluminum electrolysis capacitor is characterized in that, comprises the steps:
S10: the positive/negative plate and the lug sheet of preparation capacitor;
S11: reel: the positive/negative plate electrolytic paper is reeled, process electric core main body;
Wherein, Adopt big volume core spool during coiling; After electrolytic paper and negative paper tinsel are rolled up certain-length in advance around spool; The positive/negative plate of having riveted lug turns to cylindric around big volume core spool with electrolytic paper, extract big volume core spool then out, forms two semi-circular through hole in the axis centre of cylindric electric core main body;
S12: the shell of preparation capacitor is used to coat said electric core main body;
Wherein, the hollow pipe of a perforation is set on said shell, is provided with one between the housing of this hollow pipe and shell and accommodates cavity, to place electric core main body;
S13: preparation cover plate:, one circular hole is set in the correspondence position of cover plate corresponding to the hollow pipe of said shell.
8. like the manufacturing approach of said high temperature resistant, the long-life large-scale aluminum electrolysis capacitor of claim 7, it is characterized in that: the internal diameter of the external diameter of said hollow pipe and electric core main body through hole is suitable; Said electric core main body is installed in this host cavity, and hollow pipe inserts in the through hole of electric core main body, and the inwall of the outer wall of hollow pipe and electric core through hole closely cooperates.
9. like the manufacturing approach of said high temperature resistant, the long-life large-scale aluminum electrolysis capacitor of claim 8, it is characterized in that: said big volume core spool is cylindrical, and diameter is at least 0.8cm.
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| CN201210103604XA CN102637534A (en) | 2012-04-10 | 2012-04-10 | High-temperature long-service-life large-sized aluminum electrolytic capacitor and manufacturing method thereof |
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| CN201210103604XA CN102637534A (en) | 2012-04-10 | 2012-04-10 | High-temperature long-service-life large-sized aluminum electrolytic capacitor and manufacturing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104681285A (en) * | 2013-12-02 | 2015-06-03 | 深圳市柏瑞凯电子科技有限公司 | Novel paster solid electrolytic capacitor |
| CN105529182A (en) * | 2016-01-25 | 2016-04-27 | 池州市容大电气有限公司 | Novel capacitor |
| CN115863891A (en) * | 2023-01-05 | 2023-03-28 | 湖南德赛电池有限公司 | Battery case and battery |
| CN116072433A (en) * | 2023-03-28 | 2023-05-05 | 深圳江浩电子有限公司 | Aluminum electrolytic capacitor heat dissipation structure design manufacturing method, system and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104681285A (en) * | 2013-12-02 | 2015-06-03 | 深圳市柏瑞凯电子科技有限公司 | Novel paster solid electrolytic capacitor |
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| CN105529182A (en) * | 2016-01-25 | 2016-04-27 | 池州市容大电气有限公司 | Novel capacitor |
| CN115863891A (en) * | 2023-01-05 | 2023-03-28 | 湖南德赛电池有限公司 | Battery case and battery |
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| CN116072433A (en) * | 2023-03-28 | 2023-05-05 | 深圳江浩电子有限公司 | Aluminum electrolytic capacitor heat dissipation structure design manufacturing method, system and storage medium |
| CN116072433B (en) * | 2023-03-28 | 2023-06-02 | 深圳江浩电子有限公司 | Aluminum electrolytic capacitor heat dissipation structure design manufacturing method, system and storage medium |
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Application publication date: 20120815 |