CN113921281B - High-temperature-resistant long-service-life high-frequency low-impedance electrolytic capacitor - Google Patents

High-temperature-resistant long-service-life high-frequency low-impedance electrolytic capacitor Download PDF

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Publication number
CN113921281B
CN113921281B CN202111054149.4A CN202111054149A CN113921281B CN 113921281 B CN113921281 B CN 113921281B CN 202111054149 A CN202111054149 A CN 202111054149A CN 113921281 B CN113921281 B CN 113921281B
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Prior art keywords
electric connection
aluminum foil
capacitor
top cover
column
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CN202111054149.4A
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CN113921281A (en
Inventor
何建
石静山
何平洲
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Huangshan Zhnezhou Electronic Scientific Ltd
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Huangshan Zhnezhou Electronic Scientific Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004Details
    • H01G9/04Electrodes or formation of dielectric layers thereon
    • H01G9/048Electrodes or formation of dielectric layers thereon characterised by their structure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004Details
    • H01G9/04Electrodes or formation of dielectric layers thereon
    • H01G9/042Electrodes or formation of dielectric layers thereon characterised by the material
    • H01G9/045Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004Details
    • H01G9/08Housing; Encapsulation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13Energy storage using capacitors

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)

Abstract

The invention relates to the field of capacitors, in particular to a high-temperature-resistant long-service-life high-frequency low-impedance electrolytic capacitor. The high-temperature-resistant long-life high-frequency low-impedance electrolytic capacitor comprises a bottom shell, electrode assemblies, a capacitor core package and an electric connection assembly, wherein the top of the bottom shell is provided with a top cover, the electrode assemblies are arranged inside the top cover, the capacitor core packages are arranged at equal intervals inside the bottom shell, a partition plate is arranged between the capacitor core packages, the top of the capacitor core package is connected with the electric connection assembly, and the electric connection assembly is connected with the electrode assemblies. According to the invention, the plurality of capacitor core packages are connected in parallel through the electrode assemblies, so that the inductance of the capacitor core packages is reduced, the overall impedance of the device is reduced, and therefore, the high-frequency performance of the device is improved.

Description

High-temperature-resistant long-service-life high-frequency low-impedance electrolytic capacitor
Technical Field
The invention relates to the field of capacitors, in particular to a high-temperature-resistant long-service-life high-frequency low-impedance electrolytic capacitor.
Background
The capacitor plays an important role in circuits such as tuning, bypass, coupling and filtering, and two conductors close to each other are sandwiched by a layer of non-conductive insulating medium, so that the capacitor is formed. When a voltage is applied between the two plates of the capacitor, the capacitor stores a charge.
The conventional capacitor uses an independent core pack for energy storage, and the independent core pack has larger energy storage capacity but larger impedance, so that a novel high-temperature-resistant long-service-life high-frequency low-impedance electrolytic capacitor is needed to solve the technical problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-temperature-resistant long-service-life high-frequency low-impedance electrolytic capacitor.
The high-temperature-resistant long-life high-frequency low-impedance electrolytic capacitor provided by the invention comprises: the capacitor comprises a bottom shell, electrode assemblies, capacitor core bags and electric connection assemblies, wherein a top cover is arranged at the top of the bottom shell, the electrode assemblies are arranged in the top cover, the capacitor core bags are arranged in the bottom shell at equal intervals, a partition plate is arranged between the capacitor core bags, the electric connection assemblies are connected to the top of each capacitor core bag, and the electric connection assemblies are connected with the electrode assemblies;
the electrode assembly comprises an aluminum frame, a telescopic column, telescopic springs, right-angle sheets and a flat cable, wherein two groups of right-angle sheets are fixed on the surface of the top cover, two groups of aluminum frames are arranged at the bottom of the top cover, the aluminum frames and the right-angle sheets are correspondingly connected through the flat cable, the telescopic columns are symmetrically fixed between the top cover and the aluminum frames, and the telescopic springs are sleeved outside the telescopic columns.
Preferably, the capacitor core package comprises a cathode aluminum foil, an anode aluminum foil, diaphragm paper, foil guiding strips and a core column, wherein the cathode aluminum foil and the anode aluminum foil are wound outside the core column, the diaphragm paper is attached between the cathode aluminum foil and the anode aluminum foil and outside the cathode aluminum foil, and the foil guiding strips are connected to the surfaces of the cathode aluminum foil and the anode aluminum foil.
Preferably, the separator paper is manila capacitor paper.
Preferably, the electric connection assembly comprises an electric connection sheet, an electric connection column, a fixing hole, a fixing screw and a screw hole, wherein the electric connection sheet is fixedly connected with the foil guiding strip, the electric connection column is fixed at the end part of the electric connection sheet, the screw hole is formed in the top of the core column, the fixing hole is formed in the surface of the electric connection sheet, and the fixing screw penetrates through the fixing hole and is in threaded connection with the screw hole.
Preferably, the top of the electric connection column is spherical, and the middle of the electric connection column is provided with a dividing groove.
Preferably, the bottom shell is internally provided with a lower inclined plate symmetrically on two sides, an upper inclined plate is symmetrically fixed on two sides of the bottom of the top cover, and the upper inclined plate is in extrusion contact with the inclined surface of the lower inclined plate.
Preferably, the bottom of the bottom shell is provided with a limit groove, the bottom of the core column is in a convex shape, and the bottom of the core column is matched and spliced with the limit groove.
Compared with the related art, the high-temperature-resistant long-life high-frequency low-impedance electrolytic capacitor provided by the invention has the following beneficial effects:
the invention changes the traditional independent energy storage component, adopts a plurality of groups of capacitor core bags for energy storage, and the plurality of capacitor core bags are connected in parallel through the electrode assemblies, so that the inductance of the capacitor core bags is reduced, the integral impedance of the device is reduced, and the high-frequency performance of the device is improved;
the electric connection assembly is rigidly fixed, and the capacitor core package is connected in parallel to form a passage through the extrusion contact of the electric connection assembly and the electrode assembly, so that an independent connecting circuit is not needed, and the early assembly and the later maintenance are convenient;
according to the invention, through extrusion of the upper inclined plate and the lower inclined plate, extrusion fixation of the arranged capacitor core bags is realized when the top cover and the bottom shell are fixedly covered, so that the device has stable integrity, and the structure is convenient to package.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of an arrangement of a capacitor core pack according to the present invention;
FIG. 3 is a schematic view of the internal structure of the top cover of the present invention;
FIG. 4 is a schematic view of an electrode assembly according to the present invention;
FIG. 5 is a schematic view of an electrical connection assembly according to the present invention;
FIG. 6 is a schematic diagram of the fitting structure of the electric connection post and the aluminum frame of the present invention;
FIG. 7 is a schematic diagram of a limiting structure of a capacitor core pack according to the present invention;
fig. 8 is a schematic diagram of a capacitive core pack according to the present invention.
Reference numerals in the drawings: 1. a bottom case; 11. a limit groove; 2. a top cover; 3. an electrode assembly; 31. an aluminum frame; 32. a telescopic column; 33. a telescopic spring; 34. a right angle sheet; 35. a flat cable; 4. a capacitor core bag; 41. cathode aluminum foil; 42. an anode aluminum foil; 43. separator paper; 44. a foil guide strip; 45. a stem; 5. a lower sloping plate; 6. an upper sloping plate; 7. an electrical connection assembly; 71. an electrical tab; 72. an electric connection column; 73. a fixing hole; 74. a fixing screw; 75. a screw hole; 8. a partition board.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
Referring to fig. 1 to 8, an embodiment of the present invention provides a high temperature resistant long life high frequency low impedance electrolytic capacitor, the high temperature resistant long life high frequency low impedance electrolytic capacitor includes:
the capacitor comprises a bottom shell 1, electrode assemblies 3, capacitor core bags 4 and electric connection assemblies 7, wherein a top cover 2 is arranged at the top of the bottom shell 1, the electrode assemblies 3 are arranged in the top cover 2, the capacitor core bags 4 are arranged in the bottom shell 1 at equal intervals, a partition plate 8 is arranged between the capacitor core bags 4, the electric connection assemblies 7 are connected to the top of the capacitor core bags 4, and the electric connection assemblies 7 are connected with the electrode assemblies 3;
it should be noted that: the bottom shell 1 and the top cover 2 are fixed into a whole through screws, the plurality of capacitor core bags 4 are arranged at intervals through the partition plates 8 and are connected with the electrode assembly 3 through the electric connection assembly 7, so that the capacitor core bags 4 are electrically connected with the electrode assembly 3, an external circuit is connected through the electrode assembly 3, the plurality of capacitor core bags 4 are connected in parallel through the electrode assembly 3, the inductance of the capacitor core bags 4 is reduced, the overall impedance of the device is reduced, and therefore the high-frequency performance of the device is improved.
Referring to fig. 3 to 4, the electrode assembly 3 includes an aluminum frame 31, a telescopic column 32, a telescopic spring 33, right-angle sheets 34 and a flat cable 35, two sets of right-angle sheets 34 are fixed on the surface of the top cover 2, two sets of aluminum frames 31 are disposed at the bottom of the top cover 2, the aluminum frames 31 and the right-angle sheets 34 are correspondingly connected through the flat cable 35, the telescopic column 32 is symmetrically fixed between the top cover 2 and the aluminum frames 31, and the telescopic column 32 is sleeved with the telescopic spring 33.
It should be noted that: when the device is packaged, the top cover 2 is covered on the top of the bottom shell 1, the two aluminum frames 31 are respectively in extrusion contact with the electric connection assembly 7, the aluminum frames 31 are in stable contact with the electric connection assembly 7 through the elastic force of the telescopic matching telescopic springs 33 of the telescopic columns 32, the right-angle sheets 34 and the aluminum frames 31 are connected into a passage through the flat cables 35, and the external electrodes are directly and correspondingly connected with the right-angle sheets 34.
Referring to fig. 8, the capacitor core pack 4 includes a cathode aluminum foil 41, an anode aluminum foil 42, a separator paper 43, a foil guiding strip 44 and a core column 45, wherein the cathode aluminum foil 41 and the anode aluminum foil 42 are wound around the core column 45, the separator paper 43 is attached between the cathode aluminum foil 41 and the anode aluminum foil 42 and outside the cathode aluminum foil 41, and the foil guiding strip 44 is connected to the surfaces of the cathode aluminum foil 41 and the anode aluminum foil 42.
It should be noted that: the cathode aluminum foil 41 and the anode aluminum foil 42 are connected with an external electrode through the foil guide strips 44, the diaphragm paper 43 isolates the cathode aluminum foil 41 from the anode aluminum foil 42 and absorbs electrolyte, electric energy storage is achieved, the setting of the core column 45 plays a role in shaping the capacitor core pack 4, and the overall structure of the capacitor core pack 4 is stable.
Wherein, the separator paper 43 is made of manila capacitor paper, which reduces the loss tangent of the product.
Referring to fig. 5, the electrical connection assembly 7 includes an electrical connection piece 71, an electrical connection post 72, a fixing hole 73, a fixing screw 74 and a screw hole 75, wherein the electrical connection piece 71 is fixedly connected with the foil guiding strip 44, the electrical connection post 72 is fixed at the end of the electrical connection piece 71, the screw hole 75 is provided at the top of the stem 45, the fixing hole 73 is provided on the surface of the electrical connection piece 71, and the fixing screw 74 passes through the fixing hole 73 and is in threaded connection with the screw hole 75.
It should be noted that: the electric connection sheet 71 and the electric connection column 72 are fixed on the surface of the capacitor core bag 4 through the threaded connection of the fixing screw 74 and the screw hole 75, so that the electric connection assembly 7 is stably installed, and the stable contact between the electric connection assembly and the electrode assembly 3 is ensured.
The top of the electric connection post 72 is spherical, and a dividing groove is formed in the middle of the electric connection post 72, so that the electric connection post 72 has a compressive deformation function, and the electric connection post 72 is in extrusion contact with the aluminum frame 31.
Referring to fig. 2, the bottom casing 1 is symmetrically provided with a lower inclined plate 5 on two sides, an upper inclined plate 6 is symmetrically fixed on two sides of the bottom of the top cover 2, and the upper inclined plate 6 is in pressing contact with the inclined surface of the lower inclined plate 5, when the top cover 2 is fixedly covered with the bottom casing 1, the upper inclined plate 6 is pressed with the inclined surface of the lower inclined plate 5, so that the lower inclined plate 5 is folded towards the middle of the bottom casing 1, and the arranged capacitor core package 4 is stably mounted in a limiting manner.
Referring to fig. 7, the bottom of the bottom case 1 is provided with a limiting groove 11, the bottom of the stem 45 is convex, and the bottom of the stem 45 is inserted into the limiting groove 11 in a matching manner, so that the capacitor core pack 4 is precisely arranged in the bottom case 1, and the product integrity is high.
The working principle of the high-temperature-resistant long-life high-frequency low-impedance electrolytic capacitor provided by the invention is as follows: the bottom shell 1 and the top cover 2 are fixed into a whole through screws, a plurality of capacitor core bags 4 are arranged at intervals through the partition plates 8, two aluminum frames 31 are respectively in extrusion contact with the electric connection assembly 7, the aluminum frames 31 are in stable contact with the electric connection assembly 7 through the elastic force of the telescopic matching telescopic springs 33 of the telescopic columns 32, the right-angle plates 34 and the aluminum frames 31 are connected into a passage through the flat cables 35, the external electrodes are directly and correspondingly connected with the right-angle plates 34, the capacitor core bags 4 are electrically connected with the electrode assembly 3, the external circuits are connected through the electrode assembly 3, the capacitor core bags 4 are connected in parallel through the electrode assembly 3, the inductance of the capacitor core bags 4 is reduced, the overall impedance of the device is reduced, and therefore the high-frequency performance of the device is improved.
The circuits and control involved in the present invention are all of the prior art, and are not described in detail herein.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.

Claims (5)

1. A high temperature resistant long life high frequency low impedance electrolytic capacitor comprising:
the device comprises a bottom shell (1), wherein a top cover (2) is arranged at the top of the bottom shell (1);
an electrode assembly (3), wherein the top cover (2) is internally provided with the electrode assembly (3);
the capacitor core bags (4) are arranged in the bottom shell (1) at equal intervals, and a partition plate (8) is arranged between the capacitor core bags (4);
the top of the capacitor core bag (4) is connected with the electric connection assembly (7), and the electric connection assembly (7) is connected with the electrode assembly (3);
the electrode assembly (3) comprises an aluminum frame (31), a telescopic column (32), a telescopic spring (33), right-angle sheets (34) and a flat cable (35), wherein two groups of right-angle sheets (34) are fixed on the surface of the top cover (2), two groups of aluminum frames (31) are arranged at the bottom of the top cover (2), the aluminum frame (31) and the right-angle sheets (34) are correspondingly connected through the flat cable (35), the telescopic column (32) is symmetrically fixed between the top cover (2) and the aluminum frame (31), and the telescopic spring (33) is sleeved outside the telescopic column (32);
the capacitor core bag (4) comprises a cathode aluminum foil (41), an anode aluminum foil (42), diaphragm paper (43), foil guiding strips (44) and a core column (45), wherein the cathode aluminum foil (41) and the anode aluminum foil (42) are wound outside the core column (45), the diaphragm paper (43) is attached between the cathode aluminum foil (41) and the anode aluminum foil (42) and outside the cathode aluminum foil (41), and the foil guiding strips (44) are connected to the surfaces of the cathode aluminum foil (41) and the anode aluminum foil (42);
the electric connection assembly (7) comprises an electric connection sheet (71), an electric connection column (72), a fixing hole (73), a fixing screw (74) and a screw hole (75), wherein the electric connection sheet (71) is fixedly connected with a foil guiding strip (44), the electric connection column (72) is fixed at the end part of the electric connection sheet (71), the screw hole (75) is formed in the top of the core column (45), the fixing hole (73) is formed in the surface of the electric connection sheet (71), and the fixing screw (74) penetrates through the fixing hole (73) to be in threaded connection with the screw hole (75);
the two aluminum frames (31) are respectively in extrusion contact with the electric connection posts (72).
2. The high temperature resistant long life high frequency low impedance electrolytic capacitor of claim 1 wherein said separator paper (43) is manila capacitor paper.
3. The high temperature resistant long life high frequency low impedance electrolytic capacitor of claim 1 wherein the top of the electrical post (72) is spherical and the middle of the electrical post (72) is provided with a dividing groove.
4. The high-temperature-resistant long-life high-frequency low-impedance electrolytic capacitor according to claim 1, wherein lower sloping plates (5) are symmetrically arranged on two sides of the inside of the bottom shell (1), upper sloping plates (6) are symmetrically fixed on two sides of the bottom of the top cover (2), and the upper sloping plates (6) are in extrusion contact with inclined surfaces of the lower sloping plates (5).
5. The high-temperature-resistant long-life high-frequency low-impedance electrolytic capacitor according to claim 1, wherein the bottom of the bottom shell (1) is provided with a limiting groove (11), the bottom of the core column (45) is in a convex shape, and the bottom of the core column (45) is in fit connection with the limiting groove (11).
CN202111054149.4A 2021-09-09 2021-09-09 High-temperature-resistant long-service-life high-frequency low-impedance electrolytic capacitor Active CN113921281B (en)

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CN202111054149.4A CN113921281B (en) 2021-09-09 2021-09-09 High-temperature-resistant long-service-life high-frequency low-impedance electrolytic capacitor

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CN202111054149.4A CN113921281B (en) 2021-09-09 2021-09-09 High-temperature-resistant long-service-life high-frequency low-impedance electrolytic capacitor

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CN113921281B true CN113921281B (en) 2023-12-19

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0358406A (en) * 1989-07-26 1991-03-13 Nippon Chemicon Corp Electrolytic capacitor and mounting structure thereof
JPH06275476A (en) * 1993-03-17 1994-09-30 Nippon Steel Corp Multilayer electrolytic capacitor
JPH10229032A (en) * 1997-02-14 1998-08-25 Nippon Chemicon Corp Terminal structure for capacitor element
JP2003173942A (en) * 2001-12-06 2003-06-20 Matsushita Electric Ind Co Ltd Aluminum electrolytic capacitor and its manufacturing method
CN205303198U (en) * 2016-01-24 2016-06-08 重庆市库格尔电子有限公司 Novel aluminium electrolytic capacitor
CN211016799U (en) * 2020-01-09 2020-07-14 广州金立电子有限公司 Aluminum electrolytic capacitor convenient for mounting double-sided substrate
CN212084853U (en) * 2020-06-04 2020-12-04 益阳阳光电子科技有限公司 Aluminum electrolytic capacitor with small leakage current
CN112219250A (en) * 2018-06-05 2021-01-12 Tdk电子股份有限公司 Capacitor, assembly comprising a capacitor and a busbar, and method for manufacturing a capacitor
CN212750626U (en) * 2020-08-25 2021-03-19 达州市金联富电子科技有限公司 Lead-out electrode mounting structure and electrolytic capacitor having the same

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0358406A (en) * 1989-07-26 1991-03-13 Nippon Chemicon Corp Electrolytic capacitor and mounting structure thereof
JPH06275476A (en) * 1993-03-17 1994-09-30 Nippon Steel Corp Multilayer electrolytic capacitor
JPH10229032A (en) * 1997-02-14 1998-08-25 Nippon Chemicon Corp Terminal structure for capacitor element
JP2003173942A (en) * 2001-12-06 2003-06-20 Matsushita Electric Ind Co Ltd Aluminum electrolytic capacitor and its manufacturing method
CN205303198U (en) * 2016-01-24 2016-06-08 重庆市库格尔电子有限公司 Novel aluminium electrolytic capacitor
CN112219250A (en) * 2018-06-05 2021-01-12 Tdk电子股份有限公司 Capacitor, assembly comprising a capacitor and a busbar, and method for manufacturing a capacitor
CN211016799U (en) * 2020-01-09 2020-07-14 广州金立电子有限公司 Aluminum electrolytic capacitor convenient for mounting double-sided substrate
CN212084853U (en) * 2020-06-04 2020-12-04 益阳阳光电子科技有限公司 Aluminum electrolytic capacitor with small leakage current
CN212750626U (en) * 2020-08-25 2021-03-19 达州市金联富电子科技有限公司 Lead-out electrode mounting structure and electrolytic capacitor having the same

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