CN114843105A - Metallized film capacitor that security performance is high - Google Patents
Metallized film capacitor that security performance is high Download PDFInfo
- Publication number
- CN114843105A CN114843105A CN202210353693.7A CN202210353693A CN114843105A CN 114843105 A CN114843105 A CN 114843105A CN 202210353693 A CN202210353693 A CN 202210353693A CN 114843105 A CN114843105 A CN 114843105A
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- capacitor
- metallized film
- cylinder
- main body
- heat
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- 239000003990 capacitor Substances 0.000 title claims abstract description 82
- 239000011104 metalized film Substances 0.000 title claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 239000012782 phase change material Substances 0.000 claims abstract description 14
- 238000010521 absorption reaction Methods 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 239000010408 film Substances 0.000 claims description 9
- 241000238367 Mya arenaria Species 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012946 outsourcing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/33—Thin- or thick-film capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/08—Cooling arrangements; Heating arrangements; Ventilating arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention discloses a metalized film capacitor with high safety performance, which comprises an outer casing and a capacitor main body arranged in the outer casing, wherein the top end of the capacitor main body is provided with an electrode extending to the outside of the outer casing, the capacitor main body is of a cylindrical structure, and an insulating heat absorption barrel is arranged in the capacitor main body; and heat-conducting liquid is filled between the outer casing and the capacitor main body and inside the insulating heat absorption cylinder. The capacitor has the advantages that the insulating heat absorption barrel, the heat conducting liquid arranged in the insulating heat absorption barrel and other structures can better absorb heat generated by the capacitor main body, so that the heat is uniformly distributed, and the capacitor is prevented from being easily damaged due to one accumulated heat; and the device can have better high temperature resistance through the heat conducting rod, the phase change material and the like.
Description
Technical Field
The invention belongs to the technical field of capacitors, and particularly relates to a metalized film capacitor with high safety performance.
Background
Two conductors which are close to each other, with a non-conductive insulating medium in between, constitute a capacitor. A metallized film capacitor is manufactured, for example, by housing a capacitor element, which is formed by winding or laminating a metallized film having a metal deposited film provided on the surface of a resin film, in an outer case, filling the case with a resin, and curing the resin.
In the use process of the metallized film capacitor, the film has poor heat conductivity, and a metal coating is evaporated on the film and has good heat conductivity, so that heat is easy to gather, the temperature of the metallized film capacitor is increased, when the temperature reaches a certain temperature, the capacitor cannot continuously bear the heat caused by any current, and the service life of the capacitor is shortened.
Therefore, we propose a metallized film capacitor with high safety to solve the above problems.
Disclosure of Invention
In view of the above problems, the present invention provides a metallized film capacitor with high safety, which can avoid the heat accumulation during the use of the capacitor, so that the capacitor can have higher safety, thereby solving the problems in the background art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a metallized film capacitor with high safety performance comprises an outer casing and a capacitor main body arranged in the outer casing, wherein an electrode extending to the outside of the outer casing is arranged at the top end of the capacitor main body, the capacitor main body is of a cylindrical structure, and an insulating heat absorption cylinder is arranged in the capacitor main body;
And heat-conducting liquid is filled between the outer casing and the capacitor main body and inside the insulating heat absorption cylinder.
Furthermore, the capacitor body comprises two metal film rolls which are stacked and wound, and fixing covers for fixing the metal film rolls are arranged at the upper end and the lower end of the capacitor body.
Further, the outsourcing casing includes lid and barrel, be equipped with the outsourcing portion on barrel lateral wall top on the lid, mutually support through the screw between outsourcing portion and the barrel.
Further, lid bottom fixedly connected with sealing ring, the sealing ring sets up with the inside interference fit of barrel.
Further, the barrel comprises a soft shell and a hard shell, the upper end and the lower end of the soft shell are fixedly connected with the hard shell, and the hard shell is made of metal.
Further, a plurality of protection barrels are fixedly connected to the inner side wall of the barrel body, a plurality of springs are arranged between the outer side wall of each protection barrel and the inner wall of the barrel body, the top end of each protection barrel is fixedly connected with the corresponding sealing ring, and a plurality of communicating holes are formed in each protection barrel.
Further, a plurality of resin filling blocks are arranged between the protective cylinder and the capacitor main body, and the heat-conducting liquid is filled between the resin filling blocks.
Further, the bottom wall is equipped with the fixed slot in the barrel, capacitor body bottom fixedly connected with and fixed slot matched with fixed block.
Furthermore, a heat conducting rod is fixedly connected inside the insulating heat absorbing cylinder, and a plurality of metal rods are arranged between the heat conducting rod and the inner wall of the insulating heat absorbing cylinder.
Furthermore, the metal rod is sleeved with a phase change material, and the phase change material is wrapped on the side of the metal rod ring through a film.
Compared with the prior art, the invention has the beneficial effects that:
the capacitor has the advantages that the insulating heat absorption barrel, the heat conducting liquid arranged in the insulating heat absorption barrel and other structures can better absorb heat generated by the capacitor main body, so that the heat is uniformly distributed, and the capacitor is prevented from being easily damaged due to one accumulated heat; and the device can have better high temperature resistance through the heat conducting rod, the phase change material and the like.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a high-safety metallized film capacitor according to the present invention;
FIG. 2 is a schematic diagram of a capacitor body structure of a high-safety metallized film capacitor according to the present invention;
FIG. 3 is a schematic cross-sectional view of a high-safety metallized film capacitor according to the present invention;
fig. 4 is an enlarged schematic view of a portion a in fig. 3.
In the figure: 1. an outer casing; 11. a cover body; 12. a cylinder body; 121. a soft shell; 122. a hard shell; 123. fixing grooves; 13. an outsourcing section; 2. a capacitor body; 21. a roll of metallized film; 22. a fixed cover; 23. a fixed block; 3. an electrode; 4. an insulating heat absorbing cylinder; 41. a heat conducting rod; 42. a metal rod; 43. a phase change material; 5. a seal ring; 6. a protective cylinder; 7. a spring; 8. a communicating hole; 9. and filling the resin block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Referring to fig. 1 to 4, a metallized film capacitor with high safety includes an outer case 1 and a capacitor body 2 disposed inside the outer case 1.
The outer casing 1 includes a cover 11 and a cylinder 12, the cover 11 is provided with an outer casing 13 wrapped on the top of the side wall of the cylinder 12, and the outer casing 13 and the cylinder 12 are matched with each other through threads. And at 11 bottom fixedly connected with sealing ring 5 of lid, sealing ring 5 and the inside interference fit setting of barrel 12 improve the sealing performance between lid 11 and the barrel 12.
The barrel 12 includes a soft casing 121 and a hard casing 122, the upper and lower ends of the soft casing 121 are both fixedly connected to the hard casing 122, and the hard casing 122 is made of metal material and used for dissipating heat of the barrel 12.
A plurality of protection section of thick bamboo 6 of barrel 12 inside wall fixedly connected with are equipped with a plurality of springs 7 between 6 lateral walls of protection section of thick bamboo and the barrel 12 inner wall, and 6 top and the 5 fixed connection of sealing ring of a protection section of thick bamboo have seted up a plurality of intercommunicating pores 8 on the protection section of thick bamboo 6. Thereby playing the effect of protection, avoiding the device to appear falling easily and extrude etc. under and damage.
The bottom wall of the cylinder 12 is provided with a fixing groove 123, and the bottom end of the capacitor main body 2 is fixedly connected with a fixing block 23 matched with the fixing groove 123. Thereby achieving better fixation between the cylinder 12 and the capacitor main body 2.
The top end of the capacitor body 2 is provided with an electrode 3 extending to the outside of the outer casing 1, the capacitor body 2 is a cylindrical structure, more specifically, the capacitor body 2 comprises two metallized film rolls 21 which are stacked and wound, fixing covers 22 for fixing the metallized film rolls 21 are arranged at the upper end and the lower end, and an insulating heat absorption cylinder 4 is arranged in the capacitor body.
The insulating heat absorption cylinder 4 is filled with heat conduction liquid, so that the effects of absorbing heat and ensuring uniform heat distribution are achieved, and the high temperature caused by heat accumulation at one position is avoided.
And a heat conducting rod 41 is fixedly connected inside the insulating heat absorbing cylinder 4, and a plurality of metal rods 42 are arranged between the heat conducting rod 41 and the inner wall of the insulating heat absorbing cylinder 4, so that the heat distribution inside the insulating heat absorbing cylinder 4 is more uniform.
The metal rod 42 is sleeved with a phase-change material 43, and the phase-change material 43 may be a phase-change material such as paraffin that can be converted in a solid-liquid state. And phase change material 43 is wrapped on the metal rod 42 ring side through the film, and the phase change material 43 can realize that there is better specific heat capacity, and then realize can realizing that insulating heat absorbing barrel 4 can the temperature can be stabilized in certain scope, avoids the temperature to rise sharply.
The heat conduction liquid is filled between the outer casing 1 and the capacitor main body 2, so that the heat absorption effect is further realized, and the heat accumulation outside the capacitor is avoided.
A plurality of resin filling blocks 9 are provided between the protective tube 6 and the capacitor main body 2 to support the capacitor main body 2, and the heat conductive liquid is filled between the resin filling blocks 9. Can be used to absorb the heat that capacitor body 2 produced to along with the convection current between the heat conduction liquid, can realize that the more even distribution of heat is everywhere at the capacitor, and then avoid appearing the thermal accumulational condition.
The principle of use of the invention is as follows:
when the capacitor body 2 generates heat during working, the heat inside the capacitor body 2 can pass through the insulating heat absorbing cylinder 4 and is absorbed by the heat conducting liquid inside the insulating heat absorbing cylinder 4, not only can the capacitor body 2 self play a role of cooling, but also the heat conducting liquid can be realized by convection inside the insulating heat absorbing cylinder 4, the temperature distribution inside the insulating heat absorbing cylinder 4 is more uniform, the condition of heat accumulation is avoided, and the outward heat dissipation effect inside the insulating heat absorbing cylinder 4 is poor, so that a large amount of heat can be absorbed through the phase change of the phase change material 43 by setting the phase change material 43, further, the inside of the capacitor body 2 can be ensured to be at a proper temperature, and the over-high temperature inside the capacitor body 2 is avoided.
And the heat in the capacitor main part 2 outside will be absorbed by heat conduction liquid equally to along with the convection current between the heat conduction liquid, can realize that the more even distribution of heat is everywhere at the capacitor, and then avoid appearing the accumulational condition of heat, and heat conduction liquid accessible barrel 12 realizes carrying out the heat exchange with the external world, makes heat conduction liquid self can be in a lower temperature range, thereby can avoid the capacitor damage that the temperature anomaly leads to, thereby make the device have higher security performance.
In the using process, the cylinder 12 comprises the soft shell 121 and is provided with the protection cylinder 6, the spring 7 and other structures, so that the cylinder 12 can deform to a certain extent, the cylinder 12 can have good anti-falling and anti-pressure performances, and the device can have higher safety.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A metallized film capacitor with high safety performance comprises an outer casing (1) and a capacitor main body (2) arranged in the outer casing (1), wherein an electrode (3) extending to the outside of the outer casing (1) is arranged at the top end of the capacitor main body (2), and the metallized film capacitor is characterized in that the capacitor main body (2) is of a cylindrical structure and is internally provided with an insulating heat absorption cylinder (4);
and heat-conducting liquid is filled between the outer casing (1) and the capacitor main body (2) and inside the insulating heat absorption cylinder (4).
2. The metallized film capacitor with high safety according to claim 1, wherein said capacitor body (2) is formed by winding two metallized film rolls (21) stacked one on another, and fixing covers (22) for fixing the metallized film rolls (21) are provided at upper and lower ends thereof.
3. The metallized film capacitor with high safety performance as claimed in claim 1, wherein said outer-coated casing (1) comprises a cover body (11) and a cylinder body (12), an outer-coated portion (13) coated on the top end of the side wall of the cylinder body (12) is arranged on said cover body (11), and said outer-coated portion (13) and the cylinder body (12) are mutually matched through screw threads.
4. The metallized film capacitor with high safety performance as claimed in claim 3, characterized in that the bottom end of said cover body (11) is fixedly connected with a sealing ring (5), and said sealing ring (5) is arranged in interference fit with the interior of said cylinder body (12).
5. The metallized film capacitor with high safety performance as claimed in claim 3, wherein said cylinder (12) comprises a soft shell (121) and a hard shell (122), the upper and lower ends of said soft shell (121) are fixedly connected to said hard shell (122), and said hard shell (122) is made of metal.
6. The metallized film capacitor with high safety performance according to claim 3, characterized in that a plurality of protection cylinders (6) are fixedly connected to the inner side wall of the cylinder body (12), a plurality of springs (7) are arranged between the outer side wall of the protection cylinder (6) and the inner wall of the cylinder body (12), the top ends of the protection cylinders (6) are fixedly connected with the sealing ring (5), and a plurality of communication holes (8) are formed in the protection cylinders (6).
7. The metallized film capacitor with high safety according to claim 6, wherein a plurality of resin-filled blocks (9) are provided between the protective tube (6) and the capacitor main body (2), and the heat conductive liquid is filled between the resin-filled blocks (9).
8. The metallized film capacitor with high safety performance as claimed in claim 3, wherein the bottom wall of the cylinder (12) is provided with a fixing groove (123), and a fixing block (23) matched with the fixing groove (123) is fixedly connected to the bottom end of the capacitor main body (2).
9. The metallized film capacitor with high safety performance as claimed in claim 1, characterized in that a heat conducting rod (41) is fixedly connected inside the insulating heat absorbing cylinder (4), and a plurality of metal rods (42) are arranged between the heat conducting rod (41) and the inner wall of the insulating heat absorbing cylinder (4).
10. The metallized film capacitor with high safety performance as claimed in claim 9, characterized in that the metal rod (42) is sleeved with a phase change material (43), and the phase change material (43) is wrapped on the ring side of the metal rod (42) through a film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210353693.7A CN114843105B (en) | 2022-04-06 | 2022-04-06 | Metallized film capacitor with high safety performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210353693.7A CN114843105B (en) | 2022-04-06 | 2022-04-06 | Metallized film capacitor with high safety performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114843105A true CN114843105A (en) | 2022-08-02 |
| CN114843105B CN114843105B (en) | 2024-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210353693.7A Active CN114843105B (en) | 2022-04-06 | 2022-04-06 | Metallized film capacitor with high safety performance |
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| Country | Link |
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| CN (1) | CN114843105B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11329899A (en) * | 1998-05-12 | 1999-11-30 | Furukawa Electric Co Ltd:The | Cooling structure for capacitor |
| JP2001085268A (en) * | 1999-09-16 | 2001-03-30 | Nichicon Corp | Dry metallized film capacitor |
| JP2009277827A (en) * | 2008-05-14 | 2009-11-26 | Panasonic Corp | Capacitor |
| JP2012069633A (en) * | 2010-09-22 | 2012-04-05 | Hitachi Aic Inc | Metalized film capacitor or manufacturing method thereof |
| JP2012069717A (en) * | 2010-09-24 | 2012-04-05 | Hitachi Aic Inc | Metallized film capacitor |
| US20130252042A1 (en) * | 2010-12-03 | 2013-09-26 | Ud Trucks Corporation | Electric storage cell, electric storage apparatus, and vehicle having electric storage apparatus |
| WO2016139052A1 (en) * | 2015-03-03 | 2016-09-09 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Multi-functional housing for electronic components |
| CN108565114A (en) * | 2018-05-18 | 2018-09-21 | 长兴金新电子有限公司 | A kind of aluminium electrolutic capacitor with anti-electrolyte volatilization function |
| CN210272086U (en) * | 2019-08-20 | 2020-04-07 | 佛山市顺德区顺美莱电子实业有限公司 | Explosion-proof automatic deflation decompression metallized film capacitor |
| CN110993340A (en) * | 2019-11-15 | 2020-04-10 | 安徽航睿电子科技有限公司 | Novel film capacitor |
| CN210897007U (en) * | 2019-12-11 | 2020-06-30 | 三北(天津)电子科技有限公司 | Capacitor with over-temperature protection function |
| CN212907414U (en) * | 2020-07-24 | 2021-04-06 | 深圳市易仑科技有限公司 | Surface-mounted capacitor with good heat dissipation performance |
| CN214378042U (en) * | 2020-09-30 | 2021-10-08 | 刘艳 | Water-cooled film capacitor |
| CN215680408U (en) * | 2021-09-07 | 2022-01-28 | 苏州佳容电子科技有限公司 | Ceramic capacitor with good stability |
-
2022
- 2022-04-06 CN CN202210353693.7A patent/CN114843105B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11329899A (en) * | 1998-05-12 | 1999-11-30 | Furukawa Electric Co Ltd:The | Cooling structure for capacitor |
| JP2001085268A (en) * | 1999-09-16 | 2001-03-30 | Nichicon Corp | Dry metallized film capacitor |
| JP2009277827A (en) * | 2008-05-14 | 2009-11-26 | Panasonic Corp | Capacitor |
| JP2012069633A (en) * | 2010-09-22 | 2012-04-05 | Hitachi Aic Inc | Metalized film capacitor or manufacturing method thereof |
| JP2012069717A (en) * | 2010-09-24 | 2012-04-05 | Hitachi Aic Inc | Metallized film capacitor |
| US20130252042A1 (en) * | 2010-12-03 | 2013-09-26 | Ud Trucks Corporation | Electric storage cell, electric storage apparatus, and vehicle having electric storage apparatus |
| WO2016139052A1 (en) * | 2015-03-03 | 2016-09-09 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Multi-functional housing for electronic components |
| CN108565114A (en) * | 2018-05-18 | 2018-09-21 | 长兴金新电子有限公司 | A kind of aluminium electrolutic capacitor with anti-electrolyte volatilization function |
| CN210272086U (en) * | 2019-08-20 | 2020-04-07 | 佛山市顺德区顺美莱电子实业有限公司 | Explosion-proof automatic deflation decompression metallized film capacitor |
| CN110993340A (en) * | 2019-11-15 | 2020-04-10 | 安徽航睿电子科技有限公司 | Novel film capacitor |
| CN210897007U (en) * | 2019-12-11 | 2020-06-30 | 三北(天津)电子科技有限公司 | Capacitor with over-temperature protection function |
| CN212907414U (en) * | 2020-07-24 | 2021-04-06 | 深圳市易仑科技有限公司 | Surface-mounted capacitor with good heat dissipation performance |
| CN214378042U (en) * | 2020-09-30 | 2021-10-08 | 刘艳 | Water-cooled film capacitor |
| CN215680408U (en) * | 2021-09-07 | 2022-01-28 | 苏州佳容电子科技有限公司 | Ceramic capacitor with good stability |
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| Publication number | Publication date |
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| CN114843105B (en) | 2024-01-12 |
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