CN110957139A - Tantalum capacitor shell - Google Patents
Tantalum capacitor shell Download PDFInfo
- Publication number
- CN110957139A CN110957139A CN201911125660.1A CN201911125660A CN110957139A CN 110957139 A CN110957139 A CN 110957139A CN 201911125660 A CN201911125660 A CN 201911125660A CN 110957139 A CN110957139 A CN 110957139A
- Authority
- CN
- China
- Prior art keywords
- tantalum
- tantalum capacitor
- shell
- circular opening
- cover plate
- 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.)
- Granted
Links
- 229910052715 tantalum Inorganic materials 0.000 title claims abstract description 109
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 239000003990 capacitor Substances 0.000 title claims abstract description 68
- 239000003792 electrolyte Substances 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003481 tantalum Chemical class 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
- 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
- H01G9/145—Liquid electrolytic capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention discloses a tantalum capacitor shell which comprises a tantalum shell and a tantalum cover, wherein the tantalum shell is provided with an accommodating space, the accommodating space is used for accommodating electrolyte and a plate electrode, the top of the tantalum shell is provided with a circular opening, and the inner surface of the circular opening is provided with internal threads; the tantalum cover comprises a cover plate and a pull rod, wherein external threads are arranged on the edge of the cover plate, the cover plate is inserted into the circular opening and is in threaded connection with the inner surface of the circular opening, and the surface, back to the containing space, of the cover plate is connected with the pull rod. According to the tantalum capacitor shell, the cover plate is in threaded connection with the circular opening of the tantalum shell, so that the leakage path of electrolyte is blocked, the sealing performance of the tantalum capacitor shell is improved, the stability of voltage and current signals output by the tantalum capacitor is ensured, and the reliability of the tantalum capacitor is improved; meanwhile, the possibility of environmental pollution caused by electrolyte leakage is eliminated, the use safety and the environmental protection performance of the tantalum capacitor are improved, and the service life of epitaxial equipment is prolonged.
Description
Technical Field
The invention relates to the technical field of tantalum capacitors, in particular to a tantalum capacitor shell.
Background
The tantalum capacitor has the characteristics of small volume, large capacity, high reliability, long service life and the like, and is widely applied to the technical fields of radars, aerospace vehicles, missiles and the like. The tantalum capacitor shell is an important part of the tantalum capacitor, and is used for providing sealing protection for the electrolyte inside the tantalum capacitor and preventing the electrolyte inside the capacitor from leaking outwards on one hand, and on the other hand, the shell also provides input and output of a current and voltage signal and external environment protection for the capacitor so as to promote the normal operation of the capacitor.
However, the sealing effect of the traditional tantalum capacitor shell is poor, after the tantalum capacitor is used for a period of time, electrolyte inside the tantalum capacitor is easy to leak out, the problem of insufficient voltage inside the capacitor is easy to occur, and further, the voltage and current signals output by the capacitor are unstable, and the reliability of the capacitor is influenced; and the leakage of the electrolyte can cause pollution to the environment and corrode other elements and equipment in the environment of the tantalum capacitor, thereby shortening the service life of the equipment.
Disclosure of Invention
In view of this, it is necessary to provide a tantalum capacitor case for solving the technical problem of poor sealing effect.
A tantalum capacitor shell comprises a tantalum shell and a tantalum cover, wherein the tantalum shell is provided with an accommodating space used for accommodating electrolyte and a plate electrode, the top of the tantalum shell is provided with a circular opening, the inner surface of the circular opening is provided with internal threads, and pits are etched on the internal threads; the tantalum cover comprises a cover plate and a pull rod, wherein an external thread is arranged on the edge of the cover plate, pits are etched on the external thread, the cover plate is inserted into the circular opening and is in threaded connection with the inner surface of the circular opening, and the surface of the cover plate, which faces away from the accommodating space, is connected with the pull rod.
In one embodiment, the number of turns of the internal thread and the number of turns of the external thread are respectively greater than 3.
In one embodiment, the working height of the internal thread is greater than 10 mm.
In one embodiment, the tantalum capacitor shell further comprises a sealing ring, a thread clamping groove is formed in the outer surface of the sealing ring, and the internal thread is clamped in the thread clamping groove and is abutted to the sealing ring.
In one embodiment, the sealing ring is made of polyethylene plastic.
In one embodiment, the side of the cover plate, which faces away from the accommodating space, is further provided with a leakage-proof rubber ring, and the leakage-proof rubber ring abuts against the outer edge of the circular opening.
In one embodiment, the cover plate is integrally formed with the tie rod.
In one embodiment, the tie rod has an arcuate pull grip.
In one embodiment, the tantalum shell is a cubic structure.
In one embodiment, the tantalum shell is a cylindrical structure.
According to the tantalum capacitor shell, the cover plate is in threaded connection with the circular opening of the tantalum shell, the path of movement of electrolyte is prolonged by matching the internal thread on the circular opening with the external thread on the cover plate, and the electrolyte is blocked; in the use process of the tantalum capacitor, dust is easy to accumulate in a gap between the internal thread and the external thread, and the leakage path of electrolyte is further blocked; in addition, pits are etched on the inner threads and the outer threads respectively, so that the contact area between the cover plate and the inner surface of the circular opening is increased, the sealing performance of the shell of the tantalum capacitor is further improved, the stability of voltage and current signals output by the tantalum capacitor is ensured, and the reliability of the tantalum capacitor is improved; meanwhile, the possibility of environmental pollution caused by electrolyte leakage is eliminated, the use safety and the environmental protection performance of the tantalum capacitor are improved, and the service life of epitaxial equipment is prolonged.
Drawings
FIG. 1 is a schematic diagram of the structure of a tantalum capacitor case according to one embodiment;
FIG. 2 is an exploded view of an exemplary tantalum capacitor case;
FIG. 3 is a schematic diagram of a tantalum lid according to one embodiment.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
Referring to fig. 1 and 2 together, the present invention provides a tantalum capacitor case 10, the tantalum capacitor case 10 includes a tantalum shell 100 and a tantalum lid 200, the tantalum shell 100 has a receiving space 110, the receiving space 110 is used for receiving an electrolyte and an electrode plate, a circular opening 120 is opened at the top of the tantalum shell 100, an internal thread 121 is disposed on the inner surface of the circular opening 120, and a pit is etched on the internal thread 121; the tantalum lid 200 includes a lid plate 210 and a pull rod 220, wherein an external thread 211 is disposed on an edge of the lid plate 210, pits are etched on the external thread 211, the lid plate 210 is inserted into the circular opening 120 and is in threaded connection with an inner surface of the circular opening 120, and a surface of the lid plate 210 facing away from the accommodating space 110 is connected to the pull rod 220.
In the tantalum capacitor shell 10, the cover plate 210 is in threaded connection with the circular opening 120 of the tantalum shell 100, and the matching of the internal thread 121 on the circular opening 120 and the external thread 211 on the cover plate 210 prolongs the moving path of the electrolyte and seals the electrolyte; during the use process of the tantalum capacitor, dust is easy to accumulate in a gap between the internal thread 121 and the external thread 211, and the leakage path of electrolyte is further blocked; in addition, pit points are etched on the inner threads 121 and the outer threads 211 respectively, so that the contact area between the cover plate 210 and the inner surface of the circular opening 120 is increased, the sealing performance of the tantalum capacitor shell 10 is further improved, the stability of voltage and current signals output by the tantalum capacitor is ensured, and the reliability of the tantalum capacitor is improved; meanwhile, the possibility of environmental pollution caused by electrolyte leakage is eliminated, the use safety and the environmental protection performance of the tantalum capacitor are improved, and the service life of epitaxial equipment is prolonged.
The tantalum shell 100 is used to accommodate the electrolyte and the electrode plates and provide reaction sites for the electrolyte during the charging and discharging process between the electrode plates. It should be noted that the size of the receiving space 110 of the tantalum shell 100 directly determines the amount of the electrolyte that can be received, that is, the size of the receiving space 110 determines the capacitance of the tantalum capacitor and the charge/discharge capacity thereof, and further determines the quality of the tantalum capacitor. In one embodiment, the tantalum shell 100 is a cubic structure. In another embodiment, the tantalum shell 100 has a cylindrical structure. In actual production, the tantalum shell 100 can be designed into a polygonal prism structure according to production conditions and structural requirements of products, which are not described herein again.
In one embodiment, the number of turns of the internal thread 121 and the number of turns of the external thread 211 are respectively greater than 3. Preferably, the number of turns of the internal thread 121 and the number of turns of the external thread 211 are 5, respectively. It can be understood that the cover plate 210 is screwed with the circular opening 120 of the tantalum shell 100 through multiple turns of threads, so that the path of the electrolyte leaking outwards can be further extended, the difficulty of the electrolyte leaking is increased, and the sealing performance of the tantalum capacitor shell is improved. In one embodiment, the working height of the internal threads 121 is greater than 10 millimeters. Preferably, the working height of the internal thread 121 is 15 mm. Thus, the distance between the tooth top and the tooth bottom of the internal thread 121 is increased, the movement path of the electrolyte leaking outwards is further prolonged, and the sealing performance of the tantalum capacitor shell is further improved.
It should be noted that the pits on the internal thread 121 and the pits on the external thread 211 are formed by respectively corroding the internal thread 121 and the external thread 211 with a 40% sodium hydroxide solution, the sodium hydroxide has strong corrosivity to the tantalum plate, can remove the oxidation protection layer on the surface of the tantalum plate, and reacts with the tantalum simple substance to consume the tantalum material on the tantalum plate, so that uneven pits are formed, the contact area between the cover plate 210 and the inner surface of the circular opening 120 is increased, and the sealing performance of the tantalum capacitor shell is improved.
In an embodiment, the tantalum capacitor case further includes a sealing ring 300, a thread slot 310 is formed on an outer surface of the sealing ring 300, and the internal thread 121 is clamped in the thread slot 310 and abuts against the sealing ring 300. It can be understood that the sealing ring 300 fills the gap between the internal thread 121 and the external thread 211, thereby blocking the leakage path of the electrolyte, and thus, the sealing performance of the tantalum capacitor shell is greatly improved, and the stability of the output current and the output voltage of the tantalum capacitor is ensured. In one embodiment, the material of the sealing ring 300 is polyethylene plastic. The processing property of polyethylene plastic is better, and its elasticity is great, can carry out comprehensive packing to the gap between internal thread 121 and the external screw thread 211, and polyethylene plastic's corrosion resistance is better, is difficult for ageing deformation after contacting with electrolyte, and sustainable shutoff is carried out to the gap between internal thread 121 and the external screw thread 211 to guarantee tantalum capacitor shell's leakproofness.
The tantalum lid 200 is used to close the circular opening 120 of the tantalum shell 100, so as to realize the encapsulation of the electrolyte and the electrode plate in the accommodating space 110 and ensure the sealing performance of the tantalum capacitor. Specifically, in the process of packaging the electrolyte and the electrode plate, the tantalum lid 200 is rotated to remove the tantalum lid 200 from the circular opening 120, the electrolyte and the electrode plate are sequentially mounted on the designated positions in the accommodating space 110, and then the tantalum lid 200 is inserted into the circular opening 120 and gradually screwed into the tantalum lid 200, so that the external threads 211 of the tantalum lid 200 are screwed and locked with the internal threads 121 of the circular opening 120, thereby achieving the sealing operation of the tantalum shell 100. Referring to fig. 3, in an embodiment, a glue leakage prevention ring 212 is further disposed on a surface of the cover plate 210 facing away from the accommodating space 110, and the glue leakage prevention ring 212 abuts against an outer edge of the circular opening 120. Through set up leak protection on apron 210 and glue ring 212, can further carry out the shutoff to the gap between internal thread 121 and the external screw thread 211, prevent electrolyte seepage to the environment in, and then the problem of the extension equipment corruption of the tantalum capacitor who causes to promote safety and the feature of environmental protection that tantalum capacitor used.
The pull rod 220 is used for driving the cover plate 210 to rotate so as to reduce the difficulty of the rotation of the cover plate 210, thereby improving the assembly efficiency of the tantalum capacitor. In one embodiment, the cover plate 210 is integrally formed with the pull rod 220. Through making apron 210 and pull rod 220 integrated into one piece, pull rod 220 is difficult for droing from apron 210, has improved the stability that apron 210 is connected with pull rod 220 and the reliability that pull rod 220 atress motion transmits to apron 210 to spare and accessory's life has been prolonged. In one embodiment, the pull rod 220 has an arc-shaped pulling portion 221. Through set up the arc on pull rod 220 and draw portion 221, increased the area of contact of people's hand and pull rod 220, reduced the damage of pull rod 220 to people's hand, and then reduced pull rod 220 and apron 210 pivoted degree of difficulty, promoted tantalum capacitor's packaging efficiency.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the 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 (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911125660.1A CN110957139B (en) | 2019-11-18 | 2019-11-18 | Tantalum capacitor shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911125660.1A CN110957139B (en) | 2019-11-18 | 2019-11-18 | Tantalum capacitor shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110957139A true CN110957139A (en) | 2020-04-03 |
| CN110957139B CN110957139B (en) | 2023-11-21 |
Family
ID=69977616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911125660.1A Active CN110957139B (en) | 2019-11-18 | 2019-11-18 | Tantalum capacitor shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110957139B (en) |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB919335A (en) * | 1961-02-15 | 1963-02-20 | Telegraph Condenser Co Ltd | Improvements in or relating to solid-electrolyte feed-through capacitors |
| GB1174602A (en) * | 1966-07-12 | 1969-12-17 | Telephone Mfg Co Ltd | Improvements in or relating to Electrical Capacitors |
| DE1909282A1 (en) * | 1969-02-25 | 1970-09-10 | Licentia Gmbh | Glass housing for sealed tantalum capacitor |
| JPH06304186A (en) * | 1993-04-21 | 1994-11-01 | Nikon Corp | Intraosseous implant |
| JPH07158627A (en) * | 1993-12-06 | 1995-06-20 | Nec Corp | Looseness preventing screw |
| JPH09129215A (en) * | 1995-11-01 | 1997-05-16 | Miyagawa Kasei Ind Co Ltd | Storage battery |
| JP2002175799A (en) * | 2000-12-06 | 2002-06-21 | Japan Storage Battery Co Ltd | Sealed battery |
| KR200387519Y1 (en) * | 2005-04-04 | 2005-06-17 | 이민영 | safety bottle |
| CN2793912Y (en) * | 2005-01-13 | 2006-07-05 | 李伯明 | Hollow-insulating composite pipe |
| US7206186B1 (en) * | 2006-05-31 | 2007-04-17 | Cornell Dubilier Marketing, Inc. | Hermetically sealed electrolytic capacitor |
| US20070125658A1 (en) * | 2005-12-02 | 2007-06-07 | David Goad | Method Of Forming Valve Metal Anode Pellets For Capacitors Using Forced Convection Of Liquid Electrolyte During Anodization |
| CN101859646A (en) * | 2010-04-16 | 2010-10-13 | 株洲宏达电子有限公司 | Manufacturing method of full tantalum shell tantalum electrolytic capacitor and capacitor |
| CN201749894U (en) * | 2010-03-17 | 2011-02-16 | 山西皇城相府中道能源有限公司 | Electrolyte injection bore log for storage battery |
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| CN203351430U (en) * | 2013-07-14 | 2013-12-18 | 湖南华冉科技有限公司 | Full-tantalum insulator cover |
| CN104201299A (en) * | 2014-09-15 | 2014-12-10 | 湖南丰日电源电气股份有限公司 | Storage battery |
| CN104538186A (en) * | 2014-12-04 | 2015-04-22 | 湖南华冉科技有限公司 | High-energy hybrid tantalum capacitor housing and manufacturing method thereof |
| JP2018039247A (en) * | 2016-09-06 | 2018-03-15 | 大成プラス株式会社 | CFRTP and metal complex |
-
2019
- 2019-11-18 CN CN201911125660.1A patent/CN110957139B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB919335A (en) * | 1961-02-15 | 1963-02-20 | Telegraph Condenser Co Ltd | Improvements in or relating to solid-electrolyte feed-through capacitors |
| GB1174602A (en) * | 1966-07-12 | 1969-12-17 | Telephone Mfg Co Ltd | Improvements in or relating to Electrical Capacitors |
| DE1909282A1 (en) * | 1969-02-25 | 1970-09-10 | Licentia Gmbh | Glass housing for sealed tantalum capacitor |
| JPH06304186A (en) * | 1993-04-21 | 1994-11-01 | Nikon Corp | Intraosseous implant |
| JPH07158627A (en) * | 1993-12-06 | 1995-06-20 | Nec Corp | Looseness preventing screw |
| JPH09129215A (en) * | 1995-11-01 | 1997-05-16 | Miyagawa Kasei Ind Co Ltd | Storage battery |
| JP2002175799A (en) * | 2000-12-06 | 2002-06-21 | Japan Storage Battery Co Ltd | Sealed battery |
| CN2793912Y (en) * | 2005-01-13 | 2006-07-05 | 李伯明 | Hollow-insulating composite pipe |
| KR200387519Y1 (en) * | 2005-04-04 | 2005-06-17 | 이민영 | safety bottle |
| US20070125658A1 (en) * | 2005-12-02 | 2007-06-07 | David Goad | Method Of Forming Valve Metal Anode Pellets For Capacitors Using Forced Convection Of Liquid Electrolyte During Anodization |
| US7206186B1 (en) * | 2006-05-31 | 2007-04-17 | Cornell Dubilier Marketing, Inc. | Hermetically sealed electrolytic capacitor |
| CN201749894U (en) * | 2010-03-17 | 2011-02-16 | 山西皇城相府中道能源有限公司 | Electrolyte injection bore log for storage battery |
| CN101859646A (en) * | 2010-04-16 | 2010-10-13 | 株洲宏达电子有限公司 | Manufacturing method of full tantalum shell tantalum electrolytic capacitor and capacitor |
| CN102136560A (en) * | 2011-02-17 | 2011-07-27 | 安徽理士电池技术有限公司 | VRLA (Valve-Regulated Lead Acid) storage battery |
| CN203351430U (en) * | 2013-07-14 | 2013-12-18 | 湖南华冉科技有限公司 | Full-tantalum insulator cover |
| CN104201299A (en) * | 2014-09-15 | 2014-12-10 | 湖南丰日电源电气股份有限公司 | Storage battery |
| CN104538186A (en) * | 2014-12-04 | 2015-04-22 | 湖南华冉科技有限公司 | High-energy hybrid tantalum capacitor housing and manufacturing method thereof |
| JP2018039247A (en) * | 2016-09-06 | 2018-03-15 | 大成プラス株式会社 | CFRTP and metal complex |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110957139B (en) | 2023-11-21 |
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| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Tantalum capacitor casing Granted publication date: 20231121 Pledgee: Agricultural Bank of China Limited Zhuzhou branch Pledgor: HUNAN HUARAN TECHNOLOGY Co.,Ltd. Registration number: Y2025980003166 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |