CN108962610B - High leakproofness capacitor cover plate - Google Patents
High leakproofness capacitor cover plate Download PDFInfo
- Publication number
- CN108962610B CN108962610B CN201810593760.6A CN201810593760A CN108962610B CN 108962610 B CN108962610 B CN 108962610B CN 201810593760 A CN201810593760 A CN 201810593760A CN 108962610 B CN108962610 B CN 108962610B
- Authority
- CN
- China
- Prior art keywords
- cover plate
- connecting part
- liquid injection
- injection hole
- plate body
- 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.)
- Active
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 51
- 238000002347 injection Methods 0.000 claims abstract description 39
- 239000007924 injection Substances 0.000 claims abstract description 39
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 230000007423 decrease Effects 0.000 claims abstract description 8
- 239000003792 electrolyte Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
-
- 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)
- Microelectronics & Electronic Packaging (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a high-tightness capacitor cover plate, wherein an electrode end hole and a liquid injection hole are formed in a cover plate body, the aperture of the liquid injection hole gradually decreases from the inner side of the cover plate body to the outer side of the cover plate body, a sealing bolt is positioned in the liquid injection hole, the sealing bolt comprises a first connecting part and a second connecting part, the first connecting part and the second connecting part are fixedly connected, the diameter of the first connecting part gradually decreases from one end far away from the second connecting part to one end close to the second connecting part, the first connecting part is in threaded connection with the inner wall of the liquid injection hole, the second connecting part extends to the outer side of the cover plate body and is in threaded connection with a nut, and the nut abuts against the cover plate body; according to the high-tightness capacitor cover plate provided by the invention, after the sealing bolt is found to be loosened, the nut is screwed, the first connecting part moves to the outer side of the cover plate, and the first connecting part is tightly matched with the inner wall of the liquid injection hole again, so that electrolyte in the capacitor is prevented from leaking out through the matched part of the sealing bolt and the inner wall of the liquid injection hole.
Description
Technical Field
The invention relates to the technical field of capacitors, in particular to a high-tightness capacitor cover plate.
Background
The capacitor cover plate serves as one of the main fittings in the assembly of the capacitor, and has two functions: the capacitor core bag is sealed in the capacitor shell, and plays roles of fixing the capacitor core bag and preventing electrolyte in the capacitor from penetrating; after the common capacitor is filled with liquid, the liquid filling port is required to be sealed through the screw, but after a period of time, the screw can be loosened due to alternate cooling and heating circulation, and then electrolyte leaks out from a gap between the screw and the cover plate, so that the service life of the capacitor is influenced.
Disclosure of Invention
In order to solve the technical problems in the background technology, the invention provides a high-tightness capacitor cover plate.
The invention provides a high-tightness capacitor cover plate which comprises a cover plate body, a sealing bolt and a nut, wherein the cover plate body is provided with a sealing groove;
the cover plate body is provided with an electrode end hole and a liquid injection hole, and the aperture of the liquid injection hole gradually decreases from the inner side of the cover plate body to the outer side of the cover plate body;
the sealing bolt is arranged in the liquid injection hole, the sealing bolt comprises a first connecting part and a second connecting part, the first connecting part and the second connecting part are fixedly connected, the diameter of the first connecting part is gradually reduced from one end far away from the second connecting part to one end close to the second connecting part, the first connecting part is in threaded connection with the inner wall of the liquid injection hole, the second connecting part extends to the outer side of the cover plate body and is in threaded connection with the nut, and the nut is abutted against the cover plate body.
Preferably, the device further comprises a connecting framework, wherein the connecting framework is fixedly connected with the inner wall of the liquid injection hole and extends along the circumferential direction of the liquid injection hole, and the first connecting part is in threaded connection with the connecting bracket.
Preferably, the device further comprises a first rubber ring, wherein the first rubber ring is positioned in the liquid injection hole, and two sides of the first rubber ring respectively lean against the first connecting part and the nut.
Preferably, the sealing bolt further comprises a connecting wing edge, the connecting wing edge is fixedly connected with the first connecting part and extends to the inner side of the cover plate body, the second rubber ring is located in the inner side of the cover plate body, and two sides of the second rubber ring respectively lean against the cover plate body and the connecting wing edge.
Preferably, the nut is provided with a first limiting hole, the cover plate is provided with a plurality of second limiting holes, the second limiting holes are uniformly distributed along the circumferential direction of the liquid injection hole, and the limiting pins are inserted into the first limiting holes and the second limiting holes.
According to the high-tightness capacitor cover plate provided by the invention, the aperture of the liquid injection hole is gradually reduced from the inner side of the cover plate body to the outer side of the cover plate body, the diameter of the first connecting part is gradually reduced from one end far away from the second connecting part to one end close to the second connecting part, after the sealing bolt is found to be loose, the nut is screwed, the first connecting part moves to the outer side of the cover plate, the matching between the first connecting part and the inner wall of the liquid injection hole is again compact, and therefore the electrolyte in the capacitor is prevented from leaking out through the matching part between the sealing bolt and the inner wall of the liquid injection hole.
Drawings
FIG. 1 is a partial cross-sectional view of a high-tightness capacitor cover plate according to the present invention;
fig. 2 is a partial top view of a high-tightness capacitor cover plate according to the present invention.
Detailed Description
Fig. 1-2 are partial cross-sectional views of a high-tightness capacitor cover plate according to the present invention, and fig. 2 is a partial top view of a high-tightness capacitor cover plate according to the present invention.
Referring to fig. 1-2, the high-tightness capacitor cover plate provided by the invention comprises a cover plate body 1, a sealing bolt and a nut 3;
the middle part of the cover plate body 1 is provided with an electrode end hole 11 for fixing positive and negative electrodes, the position, close to the edge, of the cover plate body 1 is provided with a liquid injection hole, electrolyte is injected into the capacitor through the liquid injection hole, the aperture of the liquid injection hole gradually decreases from the inner side of the cover plate body 1 to the outer side of the cover plate body 1, and the section of the liquid injection hole is isosceles trapezoid when seen from fig. 1;
the sealing bolt is arranged in the liquid injection hole and used for sealing the liquid injection hole, the sealing bolt comprises a first connecting part 21 and a second connecting part 22, the first connecting part 21 is fixedly connected with the second connecting part 22, the first connecting part 21 is close to the inner side of the cover plate body 1, the second connecting part 22 is close to the outer side of the cover plate body 1, the first connecting part 21 is used for being matched with the inner wall of the liquid injection hole to achieve the effect of sealing the liquid injection hole, in the embodiment, the diameter of the first connecting part 21 is gradually reduced from one end far away from the second connecting part 22 to one end close to the second connecting part 22, the first connecting part 21 is in a truncated cone-shaped structure, threads are formed on the peripheral wall of the first connecting part 21 and used for being matched with the inner wall of the liquid injection hole, the second connecting part 22 extends to the outer side of the cover plate, the diameter of the second connecting part 22 is kept unchanged along the length direction, the section of the second connecting part 22 is rectangular, the peripheral wall of the second connecting part 22 is formed with threads, the second connecting part 22 is in threaded connection with the nut 3, the nut 3 is abutted to the outer side of the cover plate body 1, the nut 3 is rotated, the first connecting part 21 moves along the axial direction of the first connecting part 21, and the sealing effect of the first connecting part is improved, and the sealing effect of the sealing bolt is achieved.
In this embodiment, after the sealing bolt is matched with the cover plate body 1 in the liquid injection hole, one side of the first connecting portion 21, which is close to the outer side of the cover plate body 1, is located at a certain distance from the middle of the liquid injection hole to the outer side end surface of the cover plate body 1, the nut 3 is in screwed connection with the second connecting portion 22 and abuts against the outer side end surface of the cover plate body 1, after a period of time, if the first connecting portion 21 is matched with the inner wall of the liquid injection hole to loosen, or the nut 3 is matched with the second connecting portion 22 to loosen, the nut 3 can be rotated to enable the second connecting portion 22 to move to the outer side of the cover plate, then the second connecting portion 22 also moves to the outer side of the cover plate body 1, the aperture of the liquid injection hole gradually decreases from the inner side of the cover plate body 1 to the outer side of the cover plate body 1, the diameter of the first connecting portion 21 gradually decreases from one end far away from the second connecting portion 22 to one end, and the second connecting portion 22 is matched with the inner wall of the liquid injection hole to be tighter, and electrolyte is prevented from leaking out through a gap between the second connecting portion 22 and the liquid injection hole.
In this embodiment, still include connecting skeleton 4, connecting skeleton 4 and annotate liquid hole inner wall fixed connection and extend along annotating liquid hole circumference, from the view of fig. 1, connecting skeleton 4 is hugged closely on apron body 1 in the part of annotating liquid hole, connecting skeleton 4 is formed with the screw thread in the inner wall part of annotating liquid hole, first connecting portion 21 passes through screw thread and connecting skeleton 4 spiro union, reach sealed effect, connecting skeleton 4's intensity is stronger than apron body 1, and adopt insulating material to make, sealing bolt and apron body 1 cooperation back, connecting skeleton 4 can prevent that apron body 1 from taking place great deformation in the part around annotating the liquid hole.
In this embodiment, still include first rubber circle 5, first rubber circle 5 is arranged in annotating the liquid hole, first rubber circle 5 cover is established on second connecting portion 22, first rubber circle 5 both sides are supported respectively and are leaned on first connecting portion 21 and nut 3, when screwing nut 3, first rubber circle 5 is extruded by nut 3 and first connecting portion 21, first rubber circle 5 has elasticity, therefore first rubber circle 5 plays the locking effect to nut 3, and first rubber circle 5 perisporium supports and leans on annotating on the liquid hole inner wall, further play the purpose that prevents electrolyte and reveal away through annotating the liquid hole.
In this embodiment, still include second rubber circle 6, sealing bolt still includes connection wing limit 23, connection wing limit 23 and first connecting portion 21 fixed connection are located apron body 1 inboard, second rubber circle 6 cover is established in first connecting portion 21 periphery, and second rubber circle 6 both sides are respectively with connection wing limit 23 and the inboard terminal surface of apron body 1 and are supported against, when screwing first connecting portion 21, first rubber circle 5 is by connection wing limit 23 and the inboard extrusion of apron body 1, second rubber circle 6 has elasticity, therefore second rubber circle 6 plays the locking effect to first connecting portion 21, and second rubber circle 6 connects wing limit 23 and the inboard terminal surface of apron body 1 and supports against, further play the purpose that prevents electrolyte and reveal away through annotating the liquid hole.
In order to prevent nut 3 from loosening, still include spacer pin 7, be equipped with first spacing hole on the nut 3, be equipped with a plurality of second spacing holes on the apron, because the connection skeleton 4 in this embodiment extends to on the apron body 1 outside terminal surface, the second spacing hole is seted up on connection skeleton 4, a plurality of second spacing holes are along annotating liquid hole circumference evenly distributed, spacer pin 7 cartridge is in first spacing hole and different second spacing hole to play the pivoted purpose of preventing nut 3.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. The high-tightness capacitor cover plate is characterized by comprising a cover plate body (1), a sealing bolt and a nut (3);
the cover plate body (1) is provided with an electrode end hole (11) and a liquid injection hole, and the aperture of the liquid injection hole gradually decreases from the inner side of the cover plate body (1) to the outer side of the cover plate body (1);
the sealing bolt is positioned in the liquid injection hole and comprises a first connecting part (21) and a second connecting part (22), the first connecting part (21) and the second connecting part (22) are fixedly connected, the diameter of the first connecting part (21) gradually decreases from one end far away from the second connecting part (22) to one end close to the second connecting part (22), the second connecting part (22) extends to the outer side of the cover plate body (1) and is in threaded connection with the nut (3), and the nut (3) abuts against the cover plate body (1);
the device also comprises a connecting framework (4), wherein the connecting framework (4) is fixedly connected with the inner wall of the liquid injection hole and extends along the circumferential direction of the liquid injection hole, and the first connecting part (21) is in threaded connection with the connecting framework (4);
still include second rubber circle (6), sealing bolt still includes connection wing limit (23), and connection wing limit (23) and first connecting portion (21) fixed connection extend to apron body (1) inboard, and second rubber circle (6) are located apron body (1) inboard, and second rubber circle (6) both sides are supported respectively and are leaned on apron body (1) and connection wing limit (23).
2. The high-tightness capacitor cover plate according to claim 1, further comprising a first rubber ring (5), wherein the first rubber ring (5) is positioned in the liquid injection hole, and two sides of the first rubber ring (5) respectively lean against the first connecting part (21) and the nut (3).
3. The high-tightness capacitor cover plate according to claim 1, further comprising a limiting pin (7), wherein the nut (3) is provided with a first limiting hole, the cover plate is provided with a plurality of second limiting holes, the second limiting holes are uniformly distributed along the circumferential direction of the liquid injection hole, and the limiting pin (7) is inserted into the first limiting hole and the second limiting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810593760.6A CN108962610B (en) | 2018-06-11 | 2018-06-11 | High leakproofness capacitor cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810593760.6A CN108962610B (en) | 2018-06-11 | 2018-06-11 | High leakproofness capacitor cover plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108962610A CN108962610A (en) | 2018-12-07 |
| CN108962610B true CN108962610B (en) | 2023-08-11 |
Family
ID=64488306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810593760.6A Active CN108962610B (en) | 2018-06-11 | 2018-06-11 | High leakproofness capacitor cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108962610B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112599899A (en) * | 2020-12-15 | 2021-04-02 | 上海兰钧新能源科技有限公司 | Top cover structure and battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102959785A (en) * | 2010-06-30 | 2013-03-06 | 株式会社杰士汤浅国际 | Secondary battery production method, secondary battery and assembled battery |
| JP2015056358A (en) * | 2013-09-13 | 2015-03-23 | 株式会社豊田自動織機 | Power storage device |
| CN107546409A (en) * | 2017-09-07 | 2018-01-05 | 苏州绿标新能源科技有限公司 | A kind of lithium rechargeable battery |
| CN107978700A (en) * | 2017-12-28 | 2018-05-01 | 桑德集团有限公司 | A kind of cover board and metal shell for metal battery case |
-
2018
- 2018-06-11 CN CN201810593760.6A patent/CN108962610B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102959785A (en) * | 2010-06-30 | 2013-03-06 | 株式会社杰士汤浅国际 | Secondary battery production method, secondary battery and assembled battery |
| JP2015056358A (en) * | 2013-09-13 | 2015-03-23 | 株式会社豊田自動織機 | Power storage device |
| CN107546409A (en) * | 2017-09-07 | 2018-01-05 | 苏州绿标新能源科技有限公司 | A kind of lithium rechargeable battery |
| CN107978700A (en) * | 2017-12-28 | 2018-05-01 | 桑德集团有限公司 | A kind of cover board and metal shell for metal battery case |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108962610A (en) | 2018-12-07 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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