CN101329945B - Electrolytic capacitor with circumscribe type pins - Google Patents
Electrolytic capacitor with circumscribe type pins Download PDFInfo
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- CN101329945B CN101329945B CN2007101233117A CN200710123311A CN101329945B CN 101329945 B CN101329945 B CN 101329945B CN 2007101233117 A CN2007101233117 A CN 2007101233117A CN 200710123311 A CN200710123311 A CN 200710123311A CN 101329945 B CN101329945 B CN 101329945B
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- electrolytic capacitor
- pin
- circumscribe
- pins
- insulation crust
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Abstract
The invention relates to an electrolytic capacitor with pins externally arranged. The structure of the invention is that at least one capacitor element is arranged at the inner part of an insulation shell, or then electrolyte is filled in the insulation shell; a plurality of internal pins of the capacitor element run out of the bottom surface of the insulation shell; a plurality of external pins are arranged at the bottom surface of the insulation shell in a flat way. The external pins are jointed with corresponding internal pins by joint parts at one end of the external pins, and oppositely buckled and fixed with first joint parts on the bottom surface of the insulation shell by second joint parts at the extending parts of the other end of the external pins. Therefore, the electrolytic capacitor has relatively good weldability; the weldable area of the external pins of the electrolytic capacitor is enlarged; the external pins are flat and can not be displaced.
Description
Technical field
The present invention relates to a kind of electrolytic capacitor with circumscribe type pins.
Background technology
The current electrolysis capacitor is generally divided into solid electrolytic capacitor and liquid electrolytic capacitor, described electrolytic capacitor comprises that mainly a capacitor element and a shell be located at this capacitor element outside, this capacitor element has one and comprises the cathode and anode paper tinsel and be located at therebetween electrolytical coiling portion, be sealed in this insulation crust, this capacitor element has two pins and passes this insulation crust bottom surface, for be connected usefulness with the outside.
In the aforesaid electrolytic capacitor structure, traditional liquid state or solid state electrolysis electrical equipment all use metal shells such as aluminium matter, but capacitor element is sealed in the shell because of metal shells such as aluminium matter must use the blob of viscose that seals of suitable thickness, make this electrolytic capacitor have volume problem bigger than normal, be unfavorable for compact development trend, so the current electrolysis capacitor has been developed the shell that uses the insulation material to make, so that this electrolytic capacitor can further reach the purpose of volume-diminishedization.
And aforementioned existing electrolytic capacitor, no matter be to use metal shell or insulating material housing to encapsulate, for making its external pin can be when surface mount technology is welded in circuit board, its pin must further be bent into L shaped or flatten processing such as bending, because of those pins are bending, can cause stress rupture to this capacitor element or pin in the process of flattening, influence the reliability of this electrolytic capacitor, the program of the heat that other this electrolytic capacitor is passed through in the mill, easily make the soldering-tin layer carbonization on those pin surfaces and destroyed, can reduce the solderability of its pin, moreover, the pin shape of this electrolytic capacitor is narrow thin, can provide the area of welding less than normal, add to be bent into that L shaped pin is subject to the external force effect and crooked, be unfavorable for that this electrolytic capacitor is welded in circuit board, and those L shaped pins are only fixed by shell the end, end is to be free end, and has the not good problem of vibration strength.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcomes the above-mentioned defective that prior art exists, and a kind of electrolytic capacitor with circumscribe type pins is provided, and it has good vibration strength, and assembling is convenient, guaranteed quality.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of electrolytic capacitor with circumscribe type pins, it is characterized in that, mainly comprise: at least one capacitor element, this capacitor element comprises pin in a coiling portion and at least two, this coiling portion one has anode foils, Cathode Foil and is located at the coiling body of the separator between this cathode and anode paper tinsel, and pins connect this cathode and anode paper tinsel respectively in those; One insulation crust, its inner accommodation space that forms at least one sealing, for this at least one capacitor element with this coiling portion installing wherein, pin is piercing in this insulation crust bottom in those, and this insulation crust bottom surface pin side in those respectively is provided with projection Like first junction surface; Several external pins, it is the smooth respectively bottom that is mounted on this insulation crust, it comprises that a group connecting part and an extension are distolateral to extension from this group connecting part one, pin in this this capacitor element of group connecting part winding is corresponding, this extension is provided with at least one hole Like second junction surface, respectively with the corresponding combination in projection Like first junction surface, this insulation crust bottom surface, and the extension of described external pin forms towards the cumulative extension mouth of outside dimension at the side of the contiguous group connecting part in poroid second junction surface.
Aforesaid electrolytic capacitor with circumscribe type pins, wherein insulation crust comprises a shell base and a shell top cover, forms opening accommodation space up in this shell base, this shell top seal is fixedly arranged on the opening part on this shell base top.
Aforesaid electrolytic capacitor with circumscribe type pins, wherein in the coiling portion of capacitor element, its cathode and anode paper tinsel is provided with the electroconductive polymer electrolyte.
Aforesaid electrolytic capacitor with circumscribe type pins wherein is filled with electrolyte in the accommodation space of insulation crust.
Aforesaid electrolytic capacitor with circumscribe type pins, wherein the bottom periphery of insulation crust is laid with several flanges.
Aforesaid electrolytic capacitor with circumscribe type pins, wherein at least one winding breach of the terminal formation of the group connecting part of external pin is inserted winding for the corresponding interior pin of this capacitor element.
Aforesaid electrolytic capacitor with circumscribe type pins, wherein the winding breach is V-shaped.
Aforesaid electrolytic capacitor with circumscribe type pins, wherein the anode foils of capacitor element and Cathode Foil are connected with pin in two respectively, the group connecting part of described external pin is provided with a joining hole, at the terminal winding breach that forms of this group connecting part, inserts winding for the corresponding interior pin of this capacitor element.
Aforesaid electrolytic capacitor with circumscribe type pins, wherein the winding breach is V-shaped, described joining hole be the aperture of nearly winding breach end big, away from the little perforation in aperture.
Aforesaid electrolytic capacitor with circumscribe type pins, wherein this extension of external pin extends side plate portion away from the endways of group connecting part, and this insulation crust side forms a side recess, inserts wherein for the side plate of this external pin.
Aforesaid electrolytic capacitor with circumscribe type pins, wherein external pin forms with respect to the in addition side of extension mouth at poroid second junction surface and inserts depression, this inserts the depression width less than Like second junction surface, this hole, projection Like first junction surface of being located at the insulation shell bottom surface forms thin-and-long projection shape, and this projection Like inserts at first junction surface and is fixed in this poroid second junction surface and inserts in the depression.
Aforesaid electrolytic capacitor with circumscribe type pins, wherein the insulation crust bottom is provided with and seals colloid, with the described shell base end face of pin sealing and fixing in those.
The present invention designs by the aforementioned electric electrolysis condenser, its characteristics are: the present invention makes the interior pin of the capacitor element that is sealed in this insulation crust inside only keep stretch out a bit of length of insulation crust, utilize the smooth external pin that is fixedly arranged on the insulation crust bottom surface to connect again and be somebody's turn to do interior pin, whereby, make the external pin of this electrolytic capacitor not be subjected to its surperficial soldering-tin layer of temperatures involved in the processing procedure, and has preferable solderability, but and can enlarge the bonding area of this electrolytic capacitor external pin, and make those external pins smooth and can not be shifted, make this electrolytic capacitor firmly be welded on the circuit board by surface mount technology, and this external pin is affixed by multiple spot, makes it have good vibration strength.
In addition, the present invention still can utilize the shell base in this sectional casing, and power supply is held the sub-prime group and established wherein, make this capacitor element in successive process or the encapsulation finish after, because of there being this shell base to provide security protection in its outside, avoid capacitor element to be collided and impaired, guarantee the quality of this capacitor.On the other hand, those external pins can utilize translation to insert this insulation crust bottom, and utilize the relative snapping combination in corresponding first, second junction surface, make it have the assembling convenience.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the perspective exploded view of looking up that electrolytic capacitor of the present invention is first preferred embodiment with a capacitor element.
Fig. 2 is the manufacturing process schematic diagram of electrolytic capacitor first preferred embodiment shown in Figure 1.
Fig. 3 looks up the three-dimensional appearance schematic diagram after the electrolytic capacitor first preferred embodiment shown in Figure 1 combination.
Fig. 4 is the generalized section that electrolytic capacitor first preferred embodiment shown in Figure 1 is the solid electrolytic capacitor kenel.
Fig. 5 is that electrolytic capacitor first preferred embodiment shown in Figure 1 is filled with the generalized section that electrolyte becomes liquid electrolytic capacitor kenel at insulation crust.
Fig. 6 is the perspective exploded view of looking up that electrolytic capacitor of the present invention is second preferred embodiment with a plurality of capacitor elements.
Fig. 7 looks up the three-dimensional appearance schematic diagram after the electrolytic capacitor second preferred embodiment shown in Figure 6 combination.
Fig. 8 be electrolytic capacitor of the present invention have single capacitor element and this capacitor element have pins in four the 3rd preferred embodiment look up the three-dimensional appearance schematic diagram.
Fig. 9 be electrolytic capacitor of the present invention have a plurality of capacitor elements and each capacitor element have pins in four the 4th preferred embodiment look up the three-dimensional appearance schematic diagram.
Figure 10 be electrolytic capacitor of the present invention have single capacitor element and this capacitor element have pins in four other preferred embodiment look up the three-dimensional appearance schematic diagram.
Figure 11 be electrolytic capacitor of the present invention have a plurality of capacitor elements and each capacitor element have pins in four other preferred embodiment look up the three-dimensional appearance schematic diagram.
Figure 12 be another preferred embodiment of further setting up pocket recess of hole shape second junction surface of the external pin in electrolytic capacitor first preferred embodiment shown in Figure 1 look up the sectional perspective decomposing schematic representation.
Figure 13 is the floor map of looking up of electrolytic capacitor preferred embodiment shown in Figure 12.
The number in the figure explanation:
10 capacitor elements, 11 coiling portions
20 insulation crusts, 21 accommodation spaces
22 first junction surfaces, 23 shell bases
231 accommodation spaces, 232 base plate
233 pins, the 24 shell top covers of boring a hole
25 side recesses, 26 flanges
27 seal colloid
30 external pins, 31 group connecting parts
311 winding breach, 312 joining holes
32 extensions
33 second junction surfaces, 34 extension mouths
35 side plates 36 are inserted depression
Embodiment
The designed electrolytic capacitor with circumscribe type pins of the present invention can be solid electrolytic capacitor or is liquid electrolytic capacitor, each preferred embodiment as shown in figure 1 to figure 13, by can see among the figure and, this electrolytic capacitor mainly comprises at least one capacitor element 10, an insulation crust 20 and several external pins 30, wherein:
Described at least one capacitor element 10 can be one or more, at Fig. 1, Fig. 8, in Figure 10 and the preferred embodiment shown in Figure 12, show that this electrolytic capacitor has a capacitor element, at Fig. 6, Fig. 9, in the preferred embodiment shown in Figure 11, show that this electrolytic capacitor has several capacitor elements, described capacitor element 10 mainly comprises pin 12 in a coiling portion 11 and at least two, as Fig. 1, shown in Figure 6, this coiling portion 11 has an anode foils, one Cathode Foil, and the coiling body of a separator between this anode foils and Cathode Foil, pin 12 connects this anode foils and Cathode Foil respectively in those, make this anode foils or Cathode Foil be connected with at least one interior pin 12 respectively, wherein at Fig. 1, preferred embodiment shown in Figure 6, be to show that this capacitor element 10 has pin 12 in two, this anode foils and Cathode Foil connect pin 12 in respectively, in extremely preferred embodiment shown in Figure 11 of Fig. 8, be to show that this capacitor element 10 has four interior pins 12, wherein this anode foils and Cathode Foil connect pin 12 in two respectively, in having more than two, this capacitor element 10 during pin 12, can make this electrolytic capacitor have effects such as the impedance of reduction and inductive impedance.
This insulation crust 20 can be the made housing of insulating material; in the coiling portion 11 of this at least one capacitor element 10 of confession is sealed in; 12 of pins are piercing in this insulation crust 20 bottoms in those; as shown in Figure 2; the interior pin 12 of this capacitor element 10 can be made into long length usually; after treating that this at least one capacitor element 10 is sealed in this insulation crust 20; when desiring winding external pin 30; again those are passed the length that the interior pin 12 of insulation crust 20 bottom surfaces excises redundance respectively; only keep a bit of length and protrude out insulation crust 20 bottom surfaces; for external pin 30 winding usefulness, again, this insulation crust 20 pin 12 sides in those respectively are provided with first junction surface 22.
Smooth respectively this insulation crust 20 bottom surfaces that are mounted on of those external pins 30, it comprises that a group connecting part 31 and an extension 32 be located at group connecting part 31 1 sides, these group connecting part 31 ends have at least one winding breach 311, in order to these capacitor element 10 corresponding interior pins 12 of winding, this extension 32 is provided with at least one second junction surface 33, respectively with first junction surface, the 22 corresponding combinations of these insulation crust 20 bottom surfaces.
Extremely shown in Figure 5 as Fig. 1, in this preferred embodiment, this insulation crust 20 can be designed to knockdown housing, it comprises a shell base 23 and a shell top cover 24, at least one accommodation space 21 of these shell base 23 inner formation, coiling portion 11 at least one capacitor element 10 installs wherein, opening is formed on these accommodation space 21 tops, this shell base 23 respectively is provided with at least two pins perforation 233 in the base plate 232 of this at least one accommodation space 21 and extends to this shell base 23 bottom surfaces, interior pin 12 for this capacitor element 10 passes this shell base 23 bottom surfaces, these shell base 23 bottoms still can further be used and be sealed colloid 27 (as epoxy resin etc.) with these shell base 23 bottom surfaces of 12 sealing and fixing of pin in those, this shell top cover 24 is fixedly arranged on the opening at these shell base 23 tops, in the coiling portion 11 of this capacitor element 10 is sealed in, this shell top cover 24 can utilize solid fixed with the sealing of gummed means with the junction of 23 of this shell bases, or utilize the thermal welding means, or utilize ultrasonic wave engagement means etc., make the two driving fit together fixed, or the affixed means of other equivalence make the fixed one of the two driving fit; Shell base 23 bottom periphery of this insulation crust 20 still can further be laid with several flanges 26 in addition.
In the described capacitor element 10, can be provided with the electroconductive polymer electrolyte on the anode foils of this coiling portion 11 and Cathode Foil, and directly be installed in this insulation crust 20, making this electrolytic capacitor is solid electrolytic capacitor (as shown in Figure 4); The coiling portion 11 of this capacitor element 10 is installed in this insulation crust 20, and can be at the accommodation space 21 filling electrolyte 13 (as shown in Figure 5) of these insulation crust 20 inside, and making this electrolytic capacitor is liquid electrolytic capacitor.
Described several external pins 30 are made by conducting metal sheet material respectively, the extension 32 of those external pins 30 can form T shapes or L shaped etc. in conjunction with group connecting part 31, the winding breach 311 of this group connecting part 31 can be V-arrangement, arc concave etc., insert winding for these capacitor element 10 corresponding interior pins 12, as Fig. 1, Fig. 3 and Fig. 6, shown in Figure 7, these group connecting part 31 terminal winding breach 311 that form are inserted winding for pin 12 in single.
Fig. 8, shown in Figure 9 and for example, pin 12 passes insulation crust 20 bottom surfaces in one pair when the anode foils of this capacitor element 10 and Cathode Foil respectively connect, each internal pin 12 two in pins 12 be external pin 30 assemblings place that are parallel to insulation shell 20, group connecting part 31 ends of those external pins 30 can form two winding breach 311 for pins 12 in two respectively correspondence insert wherein winding.
For another Figure 10, shown in Figure 11, pin 12 passes insulation crust 20 bottom surfaces in one pair when the anode foils of this capacitor element 10 and Cathode Foil respectively connect, external pin 30 assemblings place of two interior pin 12 relative insulation shells 20 of each internal pin 12 are when one in front and one in back arranging, the group connecting part 31 terminal winding breach 311 that form of this external pin 30, and on this group connecting part 31, form a joining hole 312 for this in two pin 12 respectively correspondence insert wherein winding, it is big that aforesaid joining hole 312 can be nearly winding breach 311 stomidiums footpath, the water droplet shape perforation that the far-end aperture is little, so, when external pin 30 assemblings, can make an interior pin 12 insert the joining hole 312 big nose ends of this external pin 30, pin 12 is positioned at this winding breach 311 outsides in another, this external pin 30 of horizontal sliding then, make this two interior pin 12 lay respectively at joining hole 312 small bore end and winding breach 311 places of external pin 30, this two interior pin 12 and this external pin 30 are electrically connected.
Aforesaid external pin 30 still can further make this extension 32 extend side plate portion 35 away from the endways of group connecting part 31, and these insulation crust 20 sides form a side recess 25 and insert wherein for the side plate 35 of this external pin 30.
Described first junction surface 22 and second junction surface 33 can be concavo-convex cooperation of projection and hole (or groove), in this preferred embodiment, be to make this first junction surface 22 be the projection shape, second junction surface 33 is poroid concavo-convex cooperation, the extension 32 of this external pin 30 still can form towards the cumulative extension mouth 34 of outside dimension at the side of these poroid second junction surface 33 contiguous group connecting parts 31, whereby, this external pin can be pushed from these insulation crust 20 side translations, wherein make this projection shape first junction surface 22 be forced into this poroid second junction surface 33 snappings combination via these extension mouth 34 side direction, make those external pin 30 smooth this insulation crust 20 bottom surfaces of being fixed in, and make the interior pin 12 of winding breach 311 these capacitor elements 10 of edge butt of this group connecting part 31, make the two electric connection.
In aforementioned, after the group connecting part 31 of this external pin 30 and this interior pin 12 windings, means such as still recycling welding means or conducting resinl bonding make the two further together affixed; After this projection shape first junction surface 22 is forced into this poroid second junction surface 33 snappings combination, still can utilize hot pressing means or other equivalent manufacturing process, make this first junction surface 22 further affixed with second junction surface 33 of this extension 32, or the flange that forms big external diameter is fixed in this extension 32 bottom surfaces, make this external pin 30 firmly be fixedly arranged on this insulation shell 20 bottom surfaces, can not come off.
As Figure 12, shown in Figure 13, in this electrolytic capacitor, poroid second junction surface 33 of this external pin 30 still can form with respect to the in addition side of extension mouth 34 and insert depression 36, this width of inserting depression 36 is less than this second junction surface 33, first junction surface 22 of being located at insulation shell 20 bottom surfaces can form thin-and-long projection shape, after supplying this first junction surface 22 to enter this poroid second junction surface 33 via this extension mouth 34, further going deep into this again inserts in the depression 36, it can be put on this first junction surface 22 by the hot pressing means, first junction surface 22 is fixed in this second junction surface 33, made external pin 30 firmly be fixedly arranged on this insulation shell 20 bottom surfaces.
The present invention is by the structure design of aforementioned electric electrolysis condenser, when it is located at circuit board by the weldering of surface area mount technology, can utilize the smooth and large-area external pin of being located at the bottom that bigger welding position is provided, and the preferable solderability of solder side, this electrolytic capacitor can firmly be welded to be located on this circuit board, and be to be the fixing assembled state of multiple spot between this external pin and interior pin and insulation crust, make this external pin smooth and fixing, be not subject to the external force effect and crooked, make its external pin have excellent vibration strength.
Claims (12)
1. an electrolytic capacitor with circumscribe type pins is characterized in that, mainly comprises:
At least one capacitor element, this capacitor element comprise pins in a coiling portion and at least two, and this coiling portion one has anode foils, Cathode Foil and is located at the coiling body of the separator between this cathode and anode paper tinsel, and pins connect this cathode and anode paper tinsel respectively in those;
One insulation crust, its inner accommodation space that forms at least one sealing, for this at least one capacitor element with this coiling portion installing wherein, pin is piercing in this insulation crust bottom in those, and this insulation crust bottom surface pin side in those respectively is provided with projection Like first junction surface;
Several external pins, it is the smooth respectively bottom that is mounted on this insulation crust, it comprises that a group connecting part and an extension are distolateral to extension from this group connecting part one, pin in this this capacitor element of group connecting part winding is corresponding, this extension is provided with at least one hole Like second junction surface, respectively with the corresponding combination in projection Like first junction surface, this insulation crust bottom surface, and the extension of described external pin forms towards the cumulative extension mouth of outside dimension at the side of the contiguous group connecting part in poroid second junction surface.
2. electrolytic capacitor with circumscribe type pins according to claim 1, it is characterized in that described insulation crust comprises a shell base and a shell top cover, form opening accommodation space up in this shell base, this shell top seal is fixedly arranged on the opening part on this shell base top.
3. electrolytic capacitor with circumscribe type pins according to claim 2 is characterized in that in the coiling portion of described capacitor element, its cathode and anode paper tinsel is provided with the electroconductive polymer electrolyte.
4. electrolytic capacitor with circumscribe type pins according to claim 2 is characterized in that being filled with electrolyte in the accommodation space of described insulation crust.
5. electrolytic capacitor with circumscribe type pins according to claim 2 is characterized in that the bottom periphery of described insulation crust is laid with several flanges.
6. according to each described electrolytic capacitor with circumscribe type pins in the claim 1 to 5, it is characterized in that at least one winding breach of the terminal formation of group connecting part of described external pin, insert winding for the corresponding interior pin of this capacitor element.
7. according to claim 6 a described electrolytic capacitor with circumscribe type pins, it is characterized in that described winding breach is V-shaped.
8. according to each described electrolytic capacitor with circumscribe type pins in the claim 1 to 5, the anode foils and the Cathode Foil that it is characterized in that described capacitor element are connected with pin in two respectively, the group connecting part of described external pin is provided with a joining hole, at the terminal winding breach that forms of this group connecting part, insert winding for the corresponding interior pin of this capacitor element.
9. electrolytic capacitor with circumscribe type pins according to claim 8 is characterized in that described winding breach is V-shaped, and described joining hole is big, the little perforation in far-end aperture in the aperture of nearly winding breach end.
10. according to each described electrolytic capacitor with circumscribe type pins in the claim 1 to 5, this extension that it is characterized in that described external pin extends side plate portion away from the endways of group connecting part, this insulation crust side forms a side recess, inserts wherein for the side plate of this external pin.
11. according to each described electrolytic capacitor with circumscribe type pins in the claim 1 to 5, it is characterized in that described external pin forms with respect to the in addition side of extension mouth at poroid second junction surface inserts depression, this inserts the depression width less than Like second junction surface, this hole, projection Like first junction surface of being located at the insulation shell bottom surface forms thin-and-long projection shape, and this projection Like inserts at first junction surface and is fixed in this poroid second junction surface and inserts in the depression.
12., it is characterized in that described insulation crust bottom is provided with to seal colloid, with the described shell base end face of pin sealing and fixing in those according to each described electrolytic capacitor with circumscribe type pins in the claim 2 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101233117A CN101329945B (en) | 2007-06-22 | 2007-06-22 | Electrolytic capacitor with circumscribe type pins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101233117A CN101329945B (en) | 2007-06-22 | 2007-06-22 | Electrolytic capacitor with circumscribe type pins |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101329945A CN101329945A (en) | 2008-12-24 |
| CN101329945B true CN101329945B (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101233117A Expired - Fee Related CN101329945B (en) | 2007-06-22 | 2007-06-22 | Electrolytic capacitor with circumscribe type pins |
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| CN (1) | CN101329945B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108811412B (en) * | 2018-08-06 | 2024-04-26 | 广东美的制冷设备有限公司 | Package, switching power supply module, PCB module and air conditioner |
| CN108901168B (en) * | 2018-08-06 | 2024-03-26 | 广东美的制冷设备有限公司 | Package, switching power supply module, PCB module and air conditioner |
| CN109360702B (en) * | 2018-11-30 | 2024-07-19 | 铜陵三盛电气有限公司 | Easily adjust many capacitance value condenser |
| CN116168954B (en) * | 2021-11-25 | 2024-09-20 | 至美电器股份有限公司 | Electrolytic capacitor |
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2007
- 2007-06-22 CN CN2007101233117A patent/CN101329945B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101329945A (en) | 2008-12-24 |
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Granted publication date: 20110525 Termination date: 20170622 |