CN114220657A - Capacitor with large capacitance and small volume - Google Patents
Capacitor with large capacitance and small volume Download PDFInfo
- Publication number
- CN114220657A CN114220657A CN202111412689.5A CN202111412689A CN114220657A CN 114220657 A CN114220657 A CN 114220657A CN 202111412689 A CN202111412689 A CN 202111412689A CN 114220657 A CN114220657 A CN 114220657A
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- Prior art keywords
- capacitor
- conductive film
- film layer
- pin
- anode
- Prior art date
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- 239000003990 capacitor Substances 0.000 title claims abstract description 59
- 239000011888 foil Substances 0.000 claims abstract description 48
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000012856 packing Methods 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- 238000005452 bending Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 abstract description 2
- 239000004411 aluminium Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009963 fulling Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 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
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/32—Wound capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/224—Housing; Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/228—Terminals
- H01G4/232—Terminals electrically connecting two or more layers of a stacked or rolled capacitor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/228—Terminals
- H01G4/236—Terminals leading through the housing, i.e. lead-through
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention provides a capacitor with large capacitance and small volume, which comprises an aluminum shell, a capacitor core positioned on the inner side of the aluminum shell, a rubber pad positioned on the upper side of the capacitor core, packing paper positioned on the lower side of the capacitor core, an anode pin and a cathode pin, wherein the anode pin and the cathode pin are fixed on the inner side of the rubber pad; the capacitor core comprises an inner insulating column, anode foil, insulating paper and cathode foil, wherein the upper end of the insulating paper is connected with a first folding lug and a second folding lug; the surface coating of first book ear and below has first electrically conductive rete, first electrically conductive rete lean on to anode foil one side sets up and coil the back with anode foil contacts, first book ear is in the shaping is buckled to electric capacity core upside, and its up end first electrically conductive rete with anode pin lower extreme is inconsistent. The capacitor with large capacitance and small volume provided by the invention can solve the problem that the capacitor core is oval after being formed by winding.
Description
Technical Field
The invention relates to the technical field of capacitors, in particular to a capacitor with large capacitance and small volume.
Background
The capacitor generally comprises an aluminum shell, a capacitor core, a rubber pad, packing paper, an anode pin and a cathode pin, wherein the capacitor core is formed by winding anode foil, insulating paper and cathode foil, the cathode pin and the anode pin are usually inserted into the capacitor core and are respectively in conductive contact with the cathode foil and the anode foil, as shown in the traditional capacitor 10 of fig. 1, the cathode pin and the anode pin have certain thicknesses, both occupy partial volumes of the capacitor core, and the capacitor core is integrally oval (non-circular) after being formed by winding, so that the appearance size of the capacitor core is nonstandard, the size of the aluminum shell is larger, and the capacitance value is smaller in the capacitor with the same volume.
Disclosure of Invention
Aiming at the problems, the capacitor with large capacitance and small volume provided by the invention can solve the problem that the capacitor core is oval after being formed by winding.
In order to achieve the purpose, the invention is solved by the following technical scheme:
a capacitor with large capacitance and small volume comprises an aluminum shell, a capacitor core positioned on the inner side of the aluminum shell, a rubber pad positioned on the upper side of the capacitor core, packing paper positioned on the lower side of the capacitor core, an anode pin and a cathode pin which are fixed on the inner side of the rubber pad;
the capacitor core comprises an inner insulating column, and an anode foil, an insulating paper and a cathode foil which are sequentially stacked and wound on the outer side of the inner insulating column, wherein the upper end of the insulating paper is connected with a first folding lug and a second folding lug;
the first folding lug and the surface below the first folding lug are coated with a first conductive film layer, the first conductive film layer is arranged close to one side of the anode foil and is in contact with the anode foil after being wound, the first folding lug is formed by bending at the upper side of the capacitor core, and the first conductive film layer on the upper end surface of the first folding lug is abutted to the lower end of the anode pin;
the second folding lug and the surface below the second folding lug are coated with a second conductive film layer, the second conductive film layer is arranged close to one side of the cathode foil and is in contact with the cathode foil after being wound, the second folding lug is formed by bending the upper side of the capacitor core, and the second conductive film layer on the upper end surface of the second folding lug is abutted to the lower end of the cathode pin.
Specifically, the length of the insulating paper is greater than that of the anode foil or the cathode foil, an extension portion is arranged at one end of the insulating paper, and the extension portion wraps the outermost side of the capacitor core after being wound.
Specifically, thickened insulating layers are further arranged at the bottoms of the first conductive film layer and the second conductive film layer.
Specifically, the packing paper is of a folded structure.
Specifically, be equipped with the pressure release module on the rubber pad, the pressure release module is including fixing the cock in rubber pad upper end middle part, be located the spring of cock downside, be located T shape tucking of spring downside, the rubber pad lower extreme is equipped with the confession T shape tucking activity's shoulder hole, the shoulder hole with the inner chamber that aluminum hull formed link up, the cock middle part is equipped with the gas pocket.
Specifically, a tightening part is arranged on the aluminum shell, and a groove matched with the tightening part is formed in the edge of the rubber gasket.
Specifically, the first conductive film layer and the second conductive film layer are selected from one of an ITO conductive film, a conductive carbon film and a metal conductive film.
The invention has the beneficial effects that:
1. according to the capacitor, the upper end of the insulating paper is connected with the first folding lug and the second folding lug, the first folding lug and the surface below the first folding lug are coated with the first conductive film layer, the second folding lug and the surface below the second folding lug are coated with the second conductive film layer, after the first folding lug and the second folding lug are bent, the first conductive film layer is abutted against the lower end of the anode pin, and the second conductive film layer is abutted against the lower end of the cathode pin, so that the capacitor core is integrally in a standard circular structure after being formed by winding;
2. in order to prevent the bottom of the capacitor core from being conductive with the aluminum shell, the bottom of the capacitor core needs to be padded with paper, the conventional padded paper is thin, and the anti-puncturing capability is insufficient, the padded paper is designed into a folding structure, so that the anti-puncturing effect is achieved, the electric leakage is avoided, and the buffering and anti-vibration capability of the bottom of the capacitor core is improved;
3. the condenser during operation, because the problem of generating heat, the inner chamber of aluminium shell and the easy pressure differential that produces of condenser external environment make aluminium shell warp and damage, and this application sets up a pressure release module in rubber pad department, can solve inside and outside pressure differential problem.
Drawings
Fig. 1 is a schematic structural diagram of a conventional capacitor.
Fig. 2 is a front view of a large capacitance and small volume capacitor of the present invention.
Fig. 3 is a cross-sectional view taken along the plane a-a in fig. 2.
Fig. 4 is a bottom view of a large-capacitance small-volume capacitor according to the present invention.
Fig. 5 is a cross-sectional view taken along plane B-B of fig. 4.
Fig. 6 is an enlarged view of a portion C in fig. 5.
Fig. 7 is an enlarged view of a portion D in fig. 5.
Fig. 8 is a schematic view of the structure before the insulating paper is wound, showing the side of the insulating paper that faces the anode foil.
Fig. 9 is a schematic structural view of the insulating paper and the anode foil before being wound.
Fig. 10 is a schematic view of the structure before the insulating paper is wound, showing the side of the insulating paper against the cathode foil.
Fig. 11 is a schematic structural view before the insulating paper and the cathode foil are wound.
Fig. 12 is a schematic structural view of a thickened insulating layer on a bottom pad of the first conductive film layer or the second conductive film layer.
Fig. 13 is a schematic structural view of a packing paper.
The reference signs are: the capacitor comprises an aluminum shell 1, a tightening part 11, a capacitor core 2, an inner insulating column 21, an anode foil 22, insulating paper 23, a first folding lug 231, a second folding lug 232, an extending part 233, a cathode foil 24, a rubber pad 3, a packing paper 4, an anode pin 5, a cathode pin 6, a first conductive film layer 7, a second conductive film layer 8, a thickened insulating layer 71, a pressure relief module 9, a cock 91, an air hole 911, a spring 92, a T-shaped press pin 93 and a traditional capacitor 10.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the embodiments of the present invention are not limited thereto.
As shown in fig. 2-13:
a large-capacitance small-volume capacitor comprises an aluminum shell 1, a capacitor core 2 positioned on the inner side of the aluminum shell 1, a rubber pad 3 positioned on the upper side of the capacitor core 2, packing paper 4 positioned on the lower side of the capacitor core 2, an anode pin 5 fixed on the inner side of the rubber pad 3 and a cathode pin 6;
the capacitor core 2 comprises an inner insulating column 21, an anode foil 22, insulating paper 23 and a cathode foil 24 which are sequentially stacked and wound on the outer side of the inner insulating column 21, wherein the upper end of the insulating paper 23 is connected with a first tab 231 and a second tab 232, when the capacitor core 2 is manufactured, the anode foil 22, the insulating paper 23 and the cathode foil 24 are sequentially stacked, and then the anode foil 22, the insulating paper 23 and the cathode foil 24 are wound along the inner insulating column 21, in order to prevent the short circuit caused by the contact of the aluminum shell 1 and the anode foil 22 or the cathode foil 24, the length of the insulating paper 23 needs to be designed to be larger than that of the anode foil 22 or the cathode foil 24, an extension 233 is arranged at one end of the insulating paper 23, and the extension 233 is wound and then covers the outermost side of the capacitor core 2, so as to achieve the effect of insulation protection;
the first folding lug 231 and the surface below the first folding lug are coated with a first conductive film layer 7, the first conductive film layer 7 is arranged close to one side of the anode foil 22 and is in contact with the anode foil 22 after being wound, the first folding lug 231 is bent and formed on the upper side of the capacitor core 2, the first conductive film layer 7 on the upper end surface of the first folding lug is abutted to the lower end of the anode pin 5, and in order to enhance the contact stability of the anode pin 5 and the upper end surface of the first conductive film layer 7, during assembly, a layer of conductive adhesive with strong viscosity can be coated on the edge of the first conductive film layer 7, so that the open circuit phenomenon caused by poor contact between the anode pin 5 and the first conductive film layer 7 is prevented;
the surface coating of second ear 232 and its below has the electrically conductive rete 8 of second, the electrically conductive rete 8 of second leans on to set up and contact with cathode foil 24 after coiling cathode foil 24 one side, the shaping is buckled at electric capacity core 2 upside to the ear 232 of second, and the electrically conductive rete 8 of second of its up end is inconsistent with the 6 lower extreme of negative pole pin, in order to strengthen the contact stability of negative pole pin 6 with the electrically conductive rete 8 up end of second, during the equipment, can coat the strong conducting resin of one deck viscidity at the edge of the electrically conductive rete 8 of second, thereby prevent the open circuit phenomenon that cathode pin 6 and the electrically conductive rete 8 of second appear because of contact failure.
Preferably, the bottom of the first conductive film layer 7 and the bottom of the second conductive film layer 8 are further provided with a thickened insulating layer 71, and the thickened insulating layer 71 serves as a thickened protective pad, so that on one hand, the first conductive film layer 7 and the cathode foil 24 can be prevented from being in contact short circuit due to accidental piercing or breakage of the first folding lug 231 and the second folding lug 232, or the second conductive film layer 8 and the anode foil 22 can be prevented from being in contact short circuit.
Preferably, packing paper 4 is the ruggedized structure, on the one hand prevents impaling, avoids the electric leakage, and on the other hand has promoted the buffering shock-proof capacity of electric capacity core 2 bottom.
Preferably, the condenser during operation, because the problem of generating heat, the inner chamber of aluminium shell 1 and the easy pressure differential that produces of condenser external environment make aluminium shell 1 warp and damage, be equipped with pressure release module 9 on the rubber pad 3, pressure release module 9 is including fixing the cock 91 at 3 upper ends middle parts of rubber pad, be located the spring 92 of cock 91 downside, be located the T shape tucking needle 93 of spring 92 downside, 3 lower extremes of rubber pad are equipped with the shoulder hole that supplies the activity of T shape tucking needle 93, the shoulder hole link up with the inner chamber that aluminium shell 1 formed, cock 91 middle part is equipped with gas pocket 911.
Preferably, the aluminum shell 1 is provided with a tightening part 11, and the edge of the rubber pad 3 is provided with a groove matched with the tightening part 11.
Preferably, the first conductive film layer 7 and the second conductive film layer 8 are both ITO conductive films.
The above examples only show one embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. The utility model provides a little volumetric condenser of big electric capacity, includes aluminum hull (1), is located electric capacity core (2) of aluminum hull (1) inboard, is located rubber pad (3) of electric capacity core (2) upside, is located packing paper (4) of electric capacity core (2) downside, fix anode pin (5), negative pole pin (6) inboard rubber pad (3), its characterized in that:
the capacitor core (2) comprises an inner insulating column (21), an anode foil (22), insulating paper (23) and a cathode foil (24), wherein the anode foil, the insulating paper (23) and the cathode foil are sequentially stacked and wound on the outer side of the inner insulating column (21), and the upper end of the insulating paper (23) is connected with a first folding lug (231) and a second folding lug (232);
the first folding lug (231) and the surface below the first folding lug are coated with a first conductive film layer (7), the first conductive film layer (7) is arranged close to one side of the anode foil (22) and is in contact with the anode foil (22) after being wound, the first folding lug (231) is formed by bending the upper side of the capacitor core (2), and the first conductive film layer (7) on the upper end surface of the first folding lug is abutted to the lower end of the anode pin (5);
the surface coating of second book ear (232) and below has second conductive film layer (8), second conductive film layer (8) lean on set up and contact with cathode foil (24) after coiling cathode foil (24) one side, second book ear (232) are in capacitor core (2) upside bending type to second conductive film layer (8) of its up end with cathode pin (6) lower extreme is inconsistent.
2. A capacitor with large capacitance and small volume as claimed in claim 1, wherein the length of the insulating paper (23) is greater than the length of the anode foil (22) or the cathode foil (24), an extension part (233) is arranged at one end of the insulating paper (23), and the extension part (233) is wrapped on the outermost side of the capacitor core (2) after winding.
3. A capacitor with large capacitance and small volume as claimed in claim 1, characterized in that the bottom of the first conductive film layer (7) and the second conductive film layer (8) is further provided with a thickened insulating layer (71).
4. A capacitor with large capacitance and small volume as claimed in claim 1, wherein the paper liner (4) is folded.
5. A capacitor with large capacitance and small volume as claimed in claim 1, wherein a pressure relief module (9) is arranged on the rubber gasket (3), the pressure relief module (9) comprises a cock (91) fixed in the middle of the upper end of the rubber gasket (3), a spring (92) positioned on the lower side of the cock (91), and a T-shaped pressing pin (93) positioned on the lower side of the spring (92), the lower end of the rubber gasket (3) is provided with a stepped hole for the T-shaped pressing pin (93) to move, the stepped hole is communicated with an inner cavity formed by the aluminum shell (1), and the middle of the cock (91) is provided with an air hole (911).
6. A capacitor with large capacitance and small volume as claimed in claim 1, characterized in that the aluminum housing (1) is provided with a tightening part (11), and the edge of the rubber gasket (3) is provided with a groove matched with the tightening part (11).
7. A capacitor with large capacitance and small volume as claimed in claim 1, wherein the first conductive film layer (7) and the second conductive film layer (8) are selected from one of ITO conductive film, conductive carbon film and metal conductive film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111412689.5A CN114220657B (en) | 2021-11-25 | 2021-11-25 | Capacitor with large capacitance and small volume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111412689.5A CN114220657B (en) | 2021-11-25 | 2021-11-25 | Capacitor with large capacitance and small volume |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114220657A true CN114220657A (en) | 2022-03-22 |
| CN114220657B CN114220657B (en) | 2023-11-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111412689.5A Active CN114220657B (en) | 2021-11-25 | 2021-11-25 | Capacitor with large capacitance and small volume |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114220657B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB379299A (en) * | 1930-10-18 | 1932-08-22 | Aerovox Wireless Corp | Improvements in and relating to electrolytic cells |
| EP0655793A2 (en) * | 1993-11-19 | 1995-05-31 | Medtronic, Inc. | High-reliability electrochemical cell and electrode assembly therefor |
| JPH1064751A (en) * | 1996-08-14 | 1998-03-06 | Nissin Electric Co Ltd | Gas-insulated d-c capacitor |
| CN1701402A (en) * | 2003-03-19 | 2005-11-23 | 松下电器产业株式会社 | Capacitor and method of connecting the same |
| JP2007081006A (en) * | 2005-09-13 | 2007-03-29 | Matsushita Electric Ind Co Ltd | Case mold type capacitor |
| KR20080028020A (en) * | 2006-09-26 | 2008-03-31 | 주식회사 디지털텍 | Winding type aluminum polymer condenser |
| TW201120929A (en) * | 2009-12-04 | 2011-06-16 | Sanyo Electric Co | Winding-type electrolytic capacitor and method of manufacturing the same |
| CN203150401U (en) * | 2013-03-25 | 2013-08-21 | 深圳市科顺达电子有限公司 | A solid-state aluminum electrolytic capacitor with a long service life |
| CN106575579A (en) * | 2014-08-22 | 2017-04-19 | 日本贵弥功株式会社 | Capacitor and manufacturing method therefor |
| CN211507400U (en) * | 2019-12-16 | 2020-09-15 | 湖南艾华集团股份有限公司 | Laminated high-voltage aluminum electrolytic capacitor core cladding monomer with tab led out and capacitor |
-
2021
- 2021-11-25 CN CN202111412689.5A patent/CN114220657B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB379299A (en) * | 1930-10-18 | 1932-08-22 | Aerovox Wireless Corp | Improvements in and relating to electrolytic cells |
| EP0655793A2 (en) * | 1993-11-19 | 1995-05-31 | Medtronic, Inc. | High-reliability electrochemical cell and electrode assembly therefor |
| JPH1064751A (en) * | 1996-08-14 | 1998-03-06 | Nissin Electric Co Ltd | Gas-insulated d-c capacitor |
| CN1701402A (en) * | 2003-03-19 | 2005-11-23 | 松下电器产业株式会社 | Capacitor and method of connecting the same |
| JP2007081006A (en) * | 2005-09-13 | 2007-03-29 | Matsushita Electric Ind Co Ltd | Case mold type capacitor |
| KR20080028020A (en) * | 2006-09-26 | 2008-03-31 | 주식회사 디지털텍 | Winding type aluminum polymer condenser |
| TW201120929A (en) * | 2009-12-04 | 2011-06-16 | Sanyo Electric Co | Winding-type electrolytic capacitor and method of manufacturing the same |
| CN203150401U (en) * | 2013-03-25 | 2013-08-21 | 深圳市科顺达电子有限公司 | A solid-state aluminum electrolytic capacitor with a long service life |
| CN106575579A (en) * | 2014-08-22 | 2017-04-19 | 日本贵弥功株式会社 | Capacitor and manufacturing method therefor |
| CN211507400U (en) * | 2019-12-16 | 2020-09-15 | 湖南艾华集团股份有限公司 | Laminated high-voltage aluminum electrolytic capacitor core cladding monomer with tab led out and capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114220657B (en) | 2023-11-03 |
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