CN109285696B - Lid closure for a wound capacitor that can be arranged in a cup - Google Patents
Lid closure for a wound capacitor that can be arranged in a cup Download PDFInfo
- Publication number
- CN109285696B CN109285696B CN201810794710.4A CN201810794710A CN109285696B CN 109285696 B CN109285696 B CN 109285696B CN 201810794710 A CN201810794710 A CN 201810794710A CN 109285696 B CN109285696 B CN 109285696B
- Authority
- CN
- China
- Prior art keywords
- shaped
- dish
- cup
- plastic part
- lid closure
- 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 - Fee Related
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 31
- 239000004033 plastic Substances 0.000 claims abstract description 32
- 229920003023 plastic Polymers 0.000 claims abstract description 32
- 238000004804 winding Methods 0.000 claims abstract description 23
- 239000012212 insulator Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 8
- 210000002105 tongue Anatomy 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 239000012777 electrically insulating material Substances 0.000 claims description 3
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 abstract description 3
- 239000011324 bead Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
- H01G9/10—Sealing, e.g. of lead-in wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/78—Cases; Housings; Encapsulations; Mountings
- H01G11/80—Gaskets; Sealings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/10—Housing; Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/10—Housing; Encapsulation
- H01G2/103—Sealings, e.g. for lead-in wires; Covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/008—Terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/14—Structural combinations or circuits for modifying, or compensating for, electric characteristics of electrolytic capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/78—Cases; Housings; Encapsulations; Mountings
- H01G11/82—Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/06—Mounting in containers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Insulating Bodies (AREA)
Abstract
The invention relates to a lid closure for a coiled capacitor that can be arranged in a cup, comprising: at least one electrical connection fitting configured as an insulated cover penetration body; and a dish-shaped plastic part on which the connection fitting is fixed. According to the invention, the centering pin, which is integrally formed on the underside of the dish-shaped plastic part, extends in the direction of the capacitor winding. Furthermore, the bottom side has a plurality of flexible, tongue-shaped, spring-elastic arc-shaped elements for fixing the respective capacitor winding to compensate for tolerances.
Description
Technical Field
The invention relates to a lid closure for a coiled capacitor that can be arranged in a cup, comprising: at least one electrical connection fitting configured as an insulated cover penetration body; and a dish-shaped plastic part on which the connection fitting is fixed.
Background
Capacitors, in particular power capacitors, which are mounted in a hermetically and/or oil-tightly closed housing with a mountable feedthrough for capacitor terminals/connections are known from the prior art. Reference is made here, for example, to EP0731476a 1.
For example, DE1808795a1 discloses a lid lock for an electrolyte cup capacitor. The cover lock is designed to be electrically tight with respect to the pole feedthrough and protects the pole feedthrough against electrolytic corrosion.
The closure element is formed from thermoplastic in this respect in the form of a pot and is crimped into the opening edge of the cup.
The pot edge points inward and supports the capacitor winding on the end face against the spring force of the capacitor connection tab.
The free end of the associated connecting web is fixed below the head of a rivet which is fixedly and sealingly located in the pot bottom and projects outward and thus forms the pole feedthrough.
In order to improve the sealing against the rim of the cup, the tub bottom can be flanged on its outer rim, so that the sealing ring can be received under the outer beaded rim of the cup.
Common to all the embodiments of the described prior art is that the cup edge is bent around the pot edge, which means that for pots which are part of the lid lock, dimensional precision is required with reference to the diameter of the cup, respectively.
In the case of two insulated pole leadthroughs in the cover closure, a separating wall is arranged between the pot base and the cover edge in order to form separate safety chambers, each of which contains a terminal lug of the capacitor winding. Electrolyte bridges cannot be formed in the event of an electrical overload.
According to DE1808795a1, it is possible to form a circumferential collar in the direction of the cup, i.e. from the underside of the pot, which collar has an inwardly directed profiled circumferential rib. The capacitor winding should thereby be centered and guided and thus be held securely in the cup.
It is not possible to install different windings, i.e. capacitor windings with different diameters and/or different heights, according to the embodiments described above.
Disclosure of Invention
Starting from the above, it is therefore the object of the present invention to provide a further developed cover closure for a wound capacitor that can be arranged in a cup, which cover closure on the one hand permits different winding assemblies to be assembled using a prefabricated, so to speak standard cover, and on the other hand can dispense with a separate casting.
The lid lock to be provided should have a low self-inductance and a large electrical gap and creepage distance in the case of a small installation space and should furthermore be designed to be gas-tight.
The above object is achieved with a lid latch according to the invention for a coiled capacitor that can be arranged in a cup, comprising: at least one electrical connection fitting, which is designed as an insulating cover feedthrough; and a dish-shaped plastic part, to which the connection fitting is fixed, from which a centering pin integrally formed on the underside of the dish-shaped plastic part extends in the direction of the capacitor winding or the cup bottom, wherein the underside also has a plurality of flexible, tongue-shaped, spring-elastic arc-shaped elements for fixing the respective capacitor winding with tolerance compensation.
In this respect, the prior art is considered to be based on a cover closure for a coiled capacitor that can be arranged in a cup, which receives at least one electrical connection fitting. The electrical connection fitting is configured as an insulated cover penetration body. Furthermore, the lid closure comprises a dish-shaped plastic part, to which the fitting is fixedly connected.
According to the invention, starting from a dish-shaped plastic part, on its underside, first of all, an integrally formed centering pin extends in the direction of the capacitor winding.
The centering pin engages in the winding core and thereby fixes the position of the winding relative to the capacitor cup and, of course, also relative to the cover lock.
Furthermore, the underside of the plastic dish-shaped part has a plurality of flexible, tongue-shaped, spring-elastic arc-shaped elements for fixing the respective capacitor winding to compensate for tolerances.
In the assembled state, the bottom side of the respective arc-shaped element rests against one of the end faces of the associated capacitor winding, so that the capacitor winding is also fixed in relation to the longitudinal axis of the cup.
Compensation in terms of height can be achieved by means of the arc-shaped elements having spring-elastic properties, in particular in view of manufacturing tolerances.
The corresponding tongues or arc-shaped elements are formed in sections and extend from the edge of the dish-shaped plastic part toward the centering pin, but do not come into contact with the centering pin.
Furthermore, a recess is provided in the dish-shaped plastic part, which serves to accommodate an insulator for the screw connection.
The insulator in turn has a through-hole for the actual threaded connection.
The threaded connection is provided on its cup side with a ribbon-shaped electrical conductor, which is preferably designed as a switching rail.
The upper side of the dish-shaped plastic part is provided with a pot-shaped lid made of deformable material, which has a projecting edge for forming a crimped connection with the open side or upper cup edge of the cup.
The pot-shaped cover is preferably made of an aluminum alloy.
The lid closure according to the invention (which comprises a dish-shaped plastic part, an insulator together with a screw connection, a switching rail and a pot-shaped lid made of deformable material) is premanufacturable and can be stored in accordance with the respective variant of the cup to be closed/closed together with the capacitor winding contained therein. The electrical conductors formed as switching rails can be implemented in such a way that a stack of a plurality of windings stacked one on top of the other can be contacted in series or in parallel.
In a further embodiment of the invention, at least one elastic seal made of an electrically insulating material is arranged between the cover and the connection fitting.
The insulator has a shape approximating the number "8" in plan view.
The dish-shaped plastic part with its tongues or arc-shaped elements is made of a glass-fibre-reinforced plastic material.
In order to improve the mechanical and electrical properties, the dish-shaped plastic part has a circumferential flange or collar projecting toward the upper side and/or the lower side.
Drawings
The invention is to be explained in more detail below with the aid of exemplary embodiments and with the aid of the figures. Wherein:
FIG. 1a shows a top view of a prefabricated cover closure with a connection fitting;
FIG. 1b shows a cross-sectional view along the line A-A according to FIG. 1 a;
FIG. 1c shows a perspective view of a lid latch according to the invention;
FIG. 2a shows a top view of an insulator shaped as the numeral 8;
FIG. 2b shows a cross-sectional view along the line A-A according to FIG. 2 a;
FIG. 2c shows a bottom view of the insulator;
FIG. 2d shows a perspective view of the insulator, with the screw connector not yet installed; and is
Fig. 2e shows a cross-section of the insulator along the line B-B according to fig. 2B.
Detailed Description
The lid closure according to the invention for a wound capacitor that can be arranged in a cup has at least one electrical connection fitting, in the exemplary embodiment shown two electrical connection fittings 1. In principle, however, the number of connection fittings can be increased depending on the application and embodiment.
The electrical connection fitting 1 can be designed, for example, as a threaded connection with a corresponding external or internal thread, as shown in fig. 1 b.
The threaded connection is held by an insulator 2.
The construction of the insulator 2 can be seen in particular in fig. 2a-2 e.
The bottom sides of the screw connections can be connected to the switching rail 3 in a material-locking manner or in a force-locking manner. For a reliable connection, a disc 4 may be applied here.
Furthermore, the lid closure comprises a dish-shaped plastic part 5.
A centering pin 6 is integrally formed on the underside of the plastic part 5.
The centering pin 6 points in the direction of the capacitor winding (not shown in the figures).
Furthermore, a plurality of flexible, tongue-shaped, spring-elastic arc-shaped elements 7 are present on the underside of the dish-shaped plastic part 5.
As is clear from fig. 1b, the curved element 7 is formed in sections and extends from the edge of the dish-shaped plastic part 5 toward the centering pin 6.
Furthermore, recesses are provided in the plastic part 5, which recesses serve to accommodate the insulating body 2.
The insulating body 2 furthermore has a through-opening 8 for a screw connection.
The upper side of the dish-shaped plastic part 5 accommodates a cup-shaped cover 9 made of deformable material.
The lid 9 has a projecting edge 91 for forming a known crimped connection with the open side of a cup, not shown in the drawings.
Between the cover 9 and the connection fitting 1 there is at least one seal 10 made of an electrically insulating material.
The insulating body 2 has a shape in its top view (see fig. 2a or 2d), which approximates the shape of the numeral "8".
The dish-shaped plastic part 5 together with the curved elements 7 or tongues is made of a glass-fibre-reinforced plastic material.
The dish-shaped plastic part 5 has in a preferred embodiment a circumferential collar 11 which projects towards the upper side and/or the lower side.
The insulator 2 surrounds the wide part of the threaded connection both circumferentially and in height in order to form a sufficient electrical gap and creepage distance, as will be appreciated by a person skilled in the art from the general views of fig. 1b and 2 b.
The curved element 7 extending from the underside of the dish-shaped plastic part 5 is flexible in the direction of the arrow according to fig. 1 b.
The arc-shaped element 7 contacts with the bottom side the end side of the respective winding in the cup and fixes it. The winding stack can thus be fixed without an additional housing bead, i.e. without a bead in the cup.
As can be seen from fig. 1b, the recess present in the dish-shaped plastic part 5 is suitable for receiving a sealing element 10 which projects into the recess, wherein the undercut in the insulating body 2 receives the upper flange of the respective sealing element 10.
Alternatively, however, the insulator can also project with its lower, structured end into a corresponding recess on the facing side of the dish-shaped plastic part 5, wherein a corresponding through-hole in the deformable cover 9 needs to be adapted in a professional manner in connection therewith. A corresponding flange 20 provided on the insulator 2 and a connecting web 21 on the upper side of the insulator 2 serve to further improve the electrical clearance and creepage distance.
In order to reliably receive the forces occurring during the tightening of the threaded connection and to exclude the transmission of forces to the connection region with the switching rail 3 as far as possible, the intermediate piece of the threaded connection is polygonal in design.
In this regard, the insulators 2 each have a complementary polygonal recess 22. Thereby preventing rotation of the threaded connection when torque is applied to the threaded region of the threaded connection.
Instead of a projecting threaded connection, it is possible to instead realize a blind hole with an internal thread in order to realize an electrical connection.
The flexibility of the exemplary six tongues arranged is ensured with an exemplary material thickness of the tongue or the curved element 7 of approximately 1.5mm, in the form of a bending probability of approximately 5mm at the tongue end.
Claims (10)
1. A cover latch for a coiled capacitor that can be disposed in a cup, the cover latch comprising: at least one electrical connection fitting (1) which is designed as an insulating cover feedthrough; and a dish-shaped plastic part (5) to which the connecting fitting (1) is fastened, characterized in that a centering pin (6) integrally formed on the underside of the dish-shaped plastic part (5) extends in the direction of the capacitor winding or the cup bottom, wherein the underside also has a plurality of flexible, tongue-shaped, spring-elastic arc-shaped elements (7) for fixing the respective capacitor winding in a tolerance-compensating manner.
2. Lid closure according to claim 1, characterized in that the respective tongues or arc-shaped elements (7) are formed in sections and extend from the edge of the dish-shaped plastic part (5) towards the centering pin (6).
3. Lid closure according to claim 1 or 2, characterized in that recesses are provided in the dish-shaped plastic part (5) for receiving sealing elements and/or for receiving an insulator (2) of a connection fitting (1) designed as a threaded connection.
4. The lid closure according to claim 3, characterised in that the insulator (2) has a through-opening (8) for a threaded connection.
5. Lid closure according to claim 4, characterized in that the threaded connection is provided on its cup side with a ribbon-shaped electrical conductor which is designed as a switching rail (3).
6. Lid closure according to claim 1 or 2, characterized in that the upper side of the dish-shaped plastic part (5) has a pot-shaped lid (9) made of deformable material, which has a protruding edge (91) for forming a flanged connection with the open side of the cup.
7. The lid closure according to claim 6, characterized in that at least one seal (10) made of an electrically insulating material is arranged between the lid (9) and the connection fitting (1).
8. The lid lock according to claim 3, characterized in that the insulator (2) has approximately the shape of the number "8" in a plan view.
9. Lid closure according to claim 1 or 2, characterized in that the dish-shaped plastic part (5) together with the tongues or arc-shaped elements (7) is made of a glass-fibre-reinforced plastic material.
10. Lid closure according to claim 1 or 2, characterized in that the plastic dish-shaped part (5) has a circumferential flange or collar (11) which projects towards the upper side and/or the lower side.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017116301 | 2017-07-19 | ||
| DE102017116301.8 | 2017-07-19 | ||
| DE102017119209.3A DE102017119209B4 (en) | 2017-07-19 | 2017-08-22 | Lid closure for wound capacitors that can be arranged in a cup |
| DE102017119209.3 | 2017-08-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109285696A CN109285696A (en) | 2019-01-29 |
| CN109285696B true CN109285696B (en) | 2021-08-24 |
Family
ID=64951781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810794710.4A Expired - Fee Related CN109285696B (en) | 2017-07-19 | 2018-07-19 | Lid closure for a wound capacitor that can be arranged in a cup |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109285696B (en) |
| DE (1) | DE102017119209B4 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020110554A1 (en) | 2020-02-26 | 2021-08-26 | Electronicon Kondensatoren Gmbh | Electrical capacitor with an, in particular cylindrical, capacitor can |
| DE102022132404A1 (en) | 2022-12-06 | 2024-06-06 | Skeleton Technologies GmbH | Cover assembly for an energy storage cell, kit and energy storage cell with the cover assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1808795A1 (en) * | 1967-11-23 | 1969-07-10 | Hermes Miquelis | Lid closure for electrolyte cup capacitor |
| CN1391244A (en) * | 2001-06-07 | 2003-01-15 | 王国庆 | Dual-layer capacitor |
| CN101106020A (en) * | 2006-07-12 | 2008-01-16 | 南通海立电子有限公司 | Capacitor core cladding fixing method |
| CN102522199A (en) * | 2011-12-19 | 2012-06-27 | 上海一点点电子科技有限公司 | Fixing method of bolt-type aluminum electrolytic capacitor core package with good heat dispersion |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IE44068B1 (en) * | 1975-09-02 | 1981-08-12 | Sangamo Weston | Capacitor with molded header |
| DE3337136A1 (en) * | 1983-10-12 | 1985-04-25 | Rudolf 7896 Wutöschingen Klaschka | Sealing cover with a bushing element |
| DE9410759U1 (en) * | 1994-07-05 | 1994-09-22 | Siemens Matsushita Components GmbH & Co. KG, 81541 München | Electrical winding capacitor |
| DE19507696A1 (en) | 1995-03-06 | 1996-09-12 | Siemens Matsushita Components | Electric capacitor |
-
2017
- 2017-08-22 DE DE102017119209.3A patent/DE102017119209B4/en not_active Expired - Fee Related
-
2018
- 2018-07-19 CN CN201810794710.4A patent/CN109285696B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1808795A1 (en) * | 1967-11-23 | 1969-07-10 | Hermes Miquelis | Lid closure for electrolyte cup capacitor |
| CN1391244A (en) * | 2001-06-07 | 2003-01-15 | 王国庆 | Dual-layer capacitor |
| CN101106020A (en) * | 2006-07-12 | 2008-01-16 | 南通海立电子有限公司 | Capacitor core cladding fixing method |
| CN102522199A (en) * | 2011-12-19 | 2012-06-27 | 上海一点点电子科技有限公司 | Fixing method of bolt-type aluminum electrolytic capacitor core package with good heat dispersion |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017119209A1 (en) | 2019-01-24 |
| DE102017119209B4 (en) | 2023-02-23 |
| CN109285696A (en) | 2019-01-29 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| 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: 20210824 |