CN201749786U - Aluminium electrolytic capacitor having inner core fixing structure - Google Patents
Aluminium electrolytic capacitor having inner core fixing structure Download PDFInfo
- Publication number
- CN201749786U CN201749786U CN2010201510263U CN201020151026U CN201749786U CN 201749786 U CN201749786 U CN 201749786U CN 2010201510263 U CN2010201510263 U CN 2010201510263U CN 201020151026 U CN201020151026 U CN 201020151026U CN 201749786 U CN201749786 U CN 201749786U
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- kernel
- electrolytic capacitor
- cover plate
- thimble
- aluminium electrolytic
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Abstract
An aluminium electrolytic capacitor having an inner core fixing structure comprises an inner core (1), a housing (2), a leading-out electrode (3), a sealing gasket (6) and a cover plate (4); the inner core (1) is composed of an electrolytic aluminium foil, an electrolytic paper and an electrolyte which are coiled to a core (11); an ejector pin (7) is fasted on the bottom inside the housing (2); an outer diameter of the ejector pin (7) is adaptive to an inner hole of the coiled core (11); and the ejector pin (7) is inserted and fixed in the hole under the inner core coiled core (11). The utility model has no gel filler so as to reduce the weight of the aluminium electrolytic capacitor, enlarge a reserved encapsulation space of the inner core and provide a ventilation space for the aluminium electrolytic capacitor in working; the inner core contacts with the metal housing to directly radiate heat in a fast and better way; and the aluminium electrolytic capacitor has a stable electric performance, light weight, and long service life.
Description
[technical field]
The utility model relates to a kind of electrolytic capacitor, refers to a kind of aluminium electrolytic capacitor that the kernel fixed structure is arranged especially.
[background technology]
Aluminium electrolytic capacitor is made up of parts such as kernel, shell, leadout electrode, sealing gasket and cover plates.Kernel is made up of electrolysis aluminium foil, electrolyte and electrolytic paper winding rolling core, and interior nuclear weight is that more than 50% of whole aluminium electrolytic capacitor weight, volume are especially more than 70%.Fixedly brought bigger difficulty for encapsulation with its big quality, large volume.In the prior art, the kernel of large-scale aluminum electrolysis capacitor does not have special fixed structure, but adopts gel sets, and its advantage is the processing simple cheap, and shortcoming is that kernel installation surplus is narrow and small, the air to open valve that more easily rises of working under the high temperature; The bad control of gel-filled amount, and jello have very big physical weight cause the capacitor body weight partially " fat ", make its complete machine also " fat " partially equally; Gel is that the high temperature hot melt is filled, and certain danger is arranged; Because jello belongs to modified plastic rubber, its specific heat capacity is big, conductive coefficient is low, cause the kernel heat radiation not good enough.
[summary of the invention]
Adopt the deficiency of gel sets, the purpose of this utility model that the aluminium electrolytic capacitor that provides a kind of gel-free to fill is provided at the kernel of prior art aluminium electrolytic capacitor.
The technical scheme that its technical problem that solves the utility model adopts is: comprise kernel, shell, leadout electrode, sealing gasket and cover plate, kernel is made up of electrolysis aluminium foil, electrolytic paper and electrolyte parcel volume core, it is characterized in that; The center of shell inner bottom part is one-body molded a cylindric thimble, and this thimble external diameter is suitable with volume in-core circular hole, and thimble inserts in the hole of also being fixed in kernel volume core below.Can also there be a thimble centre at cover plate, this thimble external diameter is suitable and insert in the hole of volume core top with volume in-core hole, in order to prevent that kernel from being that axle rotates with the thimble, the spy is provided with reinforcement at the cover plate inner face, the aluminum hull inner bottom part is also established reinforcement simultaneously, set reinforcement is the active force into core surface that sink outside, blocks kernel and is in the absolute rest state.
The beneficial effects of the utility model are: the gel-free filler, alleviated the weight of aluminium electrolytic capacitor 20% ~ 50%, and strengthen the kernel more than 20% simultaneously and reserved encapsulated space, more " breathing " provides the space during aluminium electrolytic capacitor work; Radiating mode by gel media outwards conduction change into kernel contact aluminum metal case and directly dispel the heat, latter's Metal Contact heat loss through conduction better, faster, electrical property is more stable, and is in light weight, average life is longer relatively.
[description of drawings]
The utility model will be further described below in conjunction with accompanying drawing.
Fig. 1 is the aluminium electrolytic capacitor structural representation of prior art.
Fig. 2 is the structural representation of the utility model aluminium electrolytic capacitor first embodiment.
Fig. 3 is the structural representation of the utility model aluminium electrolytic capacitor most preferred embodiment.
Among the figure: 1 is that kernel, 11 is to roll up core, 2 to turn over riveting complex for leadout electrode, 31 for electrode terminal electrode chaff for shell, 3, and 4 is that cover plate, 41 is that cover plate thimble, 5 is that gel, 6 is that sealing gasket, 7 is that thimble, 8 is that cover plate reinforcement, 9 is aluminum hull inner bottom platings of being with strengthening rib strip.
[embodiment]
Referring to accompanying drawing, the utility model comprises kernel 1, shell 2, leadout electrode 3, sealing gasket 6 and cover plate 4, and kernel 1 is made up of electrolysis aluminium foil, electrolytic paper and electrolyte parcel volume core 11, it is characterized in that; Bottom in the shell 2 is fixed with a thimble 7, and these thimble 7 external diameters are suitable with volume core 11 endoporus, and thimble 7 inserts and is fixed in the hole of kernel volume core 11 belows.Described thimble 7 can be fixed in one to be strengthened in the gusset 9, this strengthens gusset 9 circumscribed circles and shell 2 bottom shapes are suitable and insert in shell 2 bottoms.In order to strengthen the fixing fastness of kernel, the lower end complex 31 of leadout electrode 3 pushes against on kernel 1 top.
In order further to strengthen the fixing fastness of kernel, in most preferred embodiment of the present utility model, a cover plate thimble 41 is arranged in the center fixed of cover plate 4, described cover plate thimble 41 external diameters are suitable with volume core 11 endoporus, and cover plate thimble 41 inserts in the hole of volume cores 11 tops.Below cover plate, cover plate reinforcement 8 can be set, and with the opening of shell 2 to the parallel tension cover plate 4 of inner edge flange, make kernel be subjected to not becoming flexible from shell 2 is fastening with the last downforce of cover plate 4, simultaneously the reinforcement of aluminum hull bottom, cover inner surface can prevent the kernel axial rotation like this at the stressing conditions into core surface that sink.
Claims (4)
1. the aluminium electrolytic capacitor that the kernel fixed structure is arranged comprises kernel (1), shell (2), leadout electrode (3), sealing gasket (6) and cover plate (4), and kernel (1) is made up of electrolysis aluminium foil, electrolytic paper and electrolyte parcel volume core (11), it is characterized in that; The center of shell (2) inner bottom part is one-body molded a cylindric thimble (7), and this thimble (7) external diameter is suitable with volume core (11) endoporus, and thimble (7) inserts and is fixed in the hole of kernel volume core (11) below.
2. according to the aluminium electrolytic capacitor that the kernel fixed structure is arranged of claim 1 or 2, it is characterized in that: the lower end of leadout electrode (3) has electrode terminal electrode chaff to turn over riveting complex (31) to push against on kernel (1) top.
3. according to the aluminium electrolytic capacitor that the kernel fixed structure is arranged of claim 1 or 2, it is characterized in that: the center fixed of cover plate (4) has a cover plate thimble (41), described cover plate thimble (41) external diameter is suitable with volume core (11) endoporus, and cover plate thimble (41) inserts in the hole of volume core (11) top.
4. according to the aluminium electrolytic capacitor that the kernel fixed structure is arranged of claim 2, it is characterized in that: be provided with cover plate reinforcement (8) in cover plate (4) below, the opening of shell (2) is pushed down cover plate (4) to the parallel tension sealing gasket of inner edge flange (6) elasticity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201510263U CN201749786U (en) | 2010-03-31 | 2010-03-31 | Aluminium electrolytic capacitor having inner core fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201510263U CN201749786U (en) | 2010-03-31 | 2010-03-31 | Aluminium electrolytic capacitor having inner core fixing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201749786U true CN201749786U (en) | 2011-02-16 |
Family
ID=43584459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201510263U Expired - Fee Related CN201749786U (en) | 2010-03-31 | 2010-03-31 | Aluminium electrolytic capacitor having inner core fixing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201749786U (en) |
-
2010
- 2010-03-31 CN CN2010201510263U patent/CN201749786U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20190331 |