CN114843105B - Metallized film capacitor with high safety performance - Google Patents
Metallized film capacitor with high safety performance Download PDFInfo
- Publication number
- CN114843105B CN114843105B CN202210353693.7A CN202210353693A CN114843105B CN 114843105 B CN114843105 B CN 114843105B CN 202210353693 A CN202210353693 A CN 202210353693A CN 114843105 B CN114843105 B CN 114843105B
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- China
- Prior art keywords
- capacitor
- cylinder
- main body
- metallized film
- heat
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- 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.)
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- 239000003990 capacitor Substances 0.000 title claims abstract description 76
- 239000011104 metalized film Substances 0.000 title claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000010521 absorption reaction Methods 0.000 claims abstract description 16
- 239000012782 phase change material Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 241000238367 Mya arenaria Species 0.000 claims description 8
- 239000010408 film Substances 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 abstract description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 7
- 235000017491 Bambusa tulda Nutrition 0.000 description 7
- 241001330002 Bambuseae Species 0.000 description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 7
- 239000011425 bamboo Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000011148 porous material Substances 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
- 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 metallized 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 cylinder is arranged in the capacitor main body; and heat conduction liquid is filled between the outer package shell and the capacitor main body and inside the insulating heat absorption cylinder. According to the invention, through the arrangement of the insulating heat absorption cylinder, the heat conduction liquid arranged in the insulating heat absorption cylinder and other structures, better absorption of heat generated by the capacitor main body can be realized, so that the heat is uniformly distributed, and the capacitor which is caused by one position of heat accumulation is prevented from being easily damaged; 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 metallized film capacitor with high safety performance.
Background
Two conductors close to each other with a layer of non-conductive insulating medium sandwiched between them, constitute a capacitor. When a voltage is applied between both electrode plates of a capacitor, the capacitor stores electric charge, and a metallized film capacitor is manufactured by, for example, housing a capacitor element formed by winding or laminating a metallized film having a metal vapor deposited film provided on the surface of a resin film in an exterior case, filling the case with a resin, and curing the resin.
In the use process of the metallized film capacitor, the heat conductivity of the film is poor, and the metal coating layer evaporated on the film 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 heat caused by any current, and the service life of the capacitor is shortened.
For this reason, we propose a metallized film capacitor with high safety performance 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 heat accumulation of the capacitor during use, so that the capacitor has higher safety, so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the metallized film capacitor with high safety performance 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 cylinder is arranged in the capacitor main body;
and heat conduction liquid is filled between the outer package shell and the capacitor main body and inside the insulating heat absorption cylinder.
Further, the capacitor body includes a fixed cover wound up by two metallized film rolls stacked and disposed at upper and lower ends to fix the metallized film rolls.
Further, the outer wrapping shell comprises a cover body and a barrel body, wherein an outer wrapping part which is wrapped at the top end of the side wall of the barrel body is arranged on the cover body, and the outer wrapping part and the barrel body are matched with each other through threads.
Further, the lid bottom fixedly connected with sealing ring, sealing ring and the inside interference fit setting of barrel.
Further, the cylinder comprises a soft shell and a hard shell, wherein 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, a plurality of springs are arranged between the outer side wall of the protection barrel and the inner wall of the barrel, the top end of the protection barrel is fixedly connected with the sealing ring, and a plurality of communication holes are formed in the protection barrel.
Further, a plurality of filling resin blocks are arranged between the protective cylinder and the capacitor main body, and the heat conduction liquid is filled between the filling resin blocks.
Further, the bottom wall in the barrel is provided with a fixed groove, and the bottom end of the capacitor main body is fixedly connected with a fixed block matched with the fixed groove.
Further, the 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 phase change material is sleeved on the metal rod, and the phase change material is wrapped on the annular side of the metal rod through the film.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, through the arrangement of the insulating heat absorption cylinder, the heat conduction liquid arranged in the insulating heat absorption cylinder and other structures, better absorption of heat generated by the capacitor main body can be realized, so that the heat is uniformly distributed, and the capacitor which is caused by one position of heat accumulation is prevented from being easily damaged; 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 the overall structure of a metallized film capacitor with high safety performance according to the present invention;
FIG. 2 is a schematic diagram of a main structure of a metallized film capacitor with high safety performance according to the present invention;
FIG. 3 is a schematic cross-sectional view of a metallized film capacitor with high safety performance according to the present invention;
fig. 4 is an enlarged schematic view of the structure of fig. 3 at a.
In the figure: 1. an outer casing; 11. a cover body; 12. a cylinder; 121. a soft shell; 122. a hard shell; 123. a fixing groove; 13. an outer wrapping part; 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 conduction rod; 42. a metal rod; 43. a phase change material; 5. a seal ring; 6. a protective cylinder; 7. a spring; 8. a communication hole; 9. filling the resin blocks.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1 to 4, a metallized film capacitor with high safety performance includes an outer case 1 and a capacitor body 2 disposed inside the outer case 1.
The outer casing 1 comprises a cover 11 and a cylinder 12, wherein the cover 11 is provided with an outer wrapping part 13 which is wrapped at the top end of the side wall of the cylinder 12, and the outer wrapping part 13 is matched with the cylinder 12 through threads. And be connected with sealing ring 5 at lid 11 bottom fixedly connected with, sealing ring 5 and the inside interference fit setting of barrel 12 improve the sealing performance between lid 11 and the barrel 12.
The cylinder 12 includes a soft shell 121 and a hard shell 122, wherein the upper and lower ends of the soft shell 121 are fixedly connected with the hard shell 122, and the hard shell 122 is made of metal and is used for heat dissipation of the cylinder 12.
The barrel 12 inside wall fixedly connected with a plurality of protection section of thick bamboo 6 is equipped with a plurality of springs 7 between protection section of thick bamboo 6 lateral wall and the barrel 12 inner wall, protection section of thick bamboo 6 top and sealing ring 5 fixed connection, has seted up a plurality of intercommunicating pores 8 on the protection section of thick bamboo 6. Therefore, the protection effect is achieved, and the device is prevented from being damaged under the conditions of falling, extrusion and the like.
The bottom wall of the cylinder 12 is provided with a fixed groove 123, and the bottom end of the capacitor main body 2 is fixedly connected with a fixed block 23 matched with the fixed groove 123. Thereby realizing better fixation between the cylinder 12 and the capacitor 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 of a cylindrical structure, more specifically, the capacitor body 2 is formed by winding two metallized film rolls 21 which are arranged in a stacked manner, the upper end and the lower end of the capacitor body are provided with fixed covers 22 for fixing the metallized film rolls 21, and the inside of the capacitor body is provided with an insulating heat absorption cylinder 4.
The heat conducting liquid is filled in the insulating heat absorbing cylinder 4, the effects of absorbing heat and guaranteeing uniform heat distribution are achieved, and the situation that heat is accumulated at one place to cause high temperature is avoided.
And fixedly connected with heat conduction rod 41 in insulating heat absorption section of thick bamboo 4, be equipped with a plurality of metal poles 42 between heat conduction rod 41 and the insulating heat absorption section of thick bamboo 4 inner wall, further realize that the inside heat distribution of insulating heat absorption section of thick bamboo 4 is more even.
The metal rod 42 is sleeved with a phase change material 43, and the phase change material 43 can be a phase change material capable of being converted in solid-liquid states, such as paraffin. And the phase change material 43 is wrapped on the annular side of the metal rod 42 through a film, so that the good specific heat capacity can be realized through the phase change material 43, and further, the insulation heat absorption barrel 4 can be stable in a certain temperature range, and the abrupt temperature rise is avoided.
And heat conducting liquid is filled between the outer casing 1 and the capacitor main body 2, so that the heat absorbing effect is further realized, and the heat accumulation outside the capacitor is avoided.
A plurality of filling resin blocks 9 are provided between the protective tube 6 and the capacitor body 2 for supporting the capacitor body 2, and a heat conductive liquid is filled between the filling resin blocks 9. Can be used to absorb the heat that the condenser main part 2 produced to along with the convection current between the heat conduction liquid, can realize that the heat distributes everywhere in the condenser more evenly, and then avoid appearing the accumulational condition of heat.
The use principle of the invention is as follows:
when the capacitor main body 2 works to generate heat, the heat in the capacitor main body 2 can be absorbed by the heat conducting liquid in the insulating heat absorbing cylinder 4 through the insulating heat absorbing cylinder 4, the capacitor main body 2 can be cooled, the heat conducting liquid can be realized by convection in the insulating heat absorbing cylinder 4, the temperature distribution in the insulating heat absorbing cylinder 4 is more uniform, the situation of heat accumulation is avoided, and the outward heat dissipation effect in the insulating heat absorbing cylinder 4 is poor, so that the phase change material 43 can absorb a large amount of heat through the change of the phase state of the phase change material 43, the inside of the capacitor main body 2 can be further ensured to be at a proper temperature, and the inside temperature of the capacitor main body 2 is prevented from being too high.
The heat outside the capacitor main body 2 is also absorbed by the heat conducting liquid, and along with convection between the heat conducting liquids, the heat can be more uniformly distributed at all parts of the capacitor, so that the accumulation of the heat is avoided, and the heat conducting liquid can exchange heat with the outside through the cylinder 12, so that the heat conducting liquid can be in a lower temperature range, the capacitor damage caused by abnormal temperature can be avoided, and the device has higher safety performance.
In the use process, the barrel 12 comprises the soft shell 121, and the barrel 12 can deform to a certain extent due to the arrangement of the structures such as the protective barrel 6, the spring 7 and the like, so that the barrel 12 can have good anti-falling and compression resistance, and the device can have higher safety.
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 (6)
1. The 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 an insulating heat absorption cylinder (4) is arranged in the capacitor main body; the heat conducting liquid is filled between the outer casing (1) and the capacitor main body (2) and inside the insulating heat absorbing cylinder (4); the outer wrapping shell (1) comprises a cover body (11) and a barrel body (12), wherein an outer wrapping part (13) which is wrapped at the top end of the side wall of the barrel body (12) is arranged on the cover body (11), and the outer wrapping part (13) and the barrel body (12) are mutually matched through threads; the novel anti-theft protection device is 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 cylinders (6) and the inner wall of the cylinder body (12), the top end of each protection cylinder (6) is fixedly connected with the sealing ring (5), and a plurality of communication holes (8) are formed in each protection cylinder (6); the cylinder body (12) comprises a soft shell (121) and a hard shell (122), wherein the upper end and the lower end of the soft shell (121) are fixedly connected with the hard shell (122), and the hard shell (122) is made of metal; a plurality of filling resin blocks (9) are arranged between the protective cylinder (6) and the capacitor main body (2), and the heat conduction liquid is filled between the filling resin blocks (9).
2. The metallized film capacitor with high safety according to claim 1, wherein the capacitor body (2) comprises a rolled up metallized film roll (21) which is provided by two layers, and a fixing cover (22) for fixing the metallized film roll (21) is provided at the upper and lower ends.
3. The metallized film capacitor with high safety performance according to claim 1, wherein the bottom end of the cover body (11) is fixedly connected with a sealing ring (5), and the sealing ring (5) is in interference fit with the inside of the cylinder body (12).
4. The metallized film capacitor with high safety performance according to claim 1, wherein the inner 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).
5. The metallized film capacitor with high safety performance according to claim 1, wherein the 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).
6. The metallized film capacitor of claim 5, wherein the metal rod (42) is sleeved with a phase change material (43), and the phase change material (43) is wrapped around the metal rod (42) by 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 CN114843105A (en) | 2022-08-02 |
| CN114843105B true CN114843105B (en) | 2024-01-12 |
Family
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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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114843105B (en) |
Citations (13)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5732241B2 (en) * | 2010-12-03 | 2015-06-10 | Ｕｄトラックス株式会社 | Power storage cell, power storage device, and vehicle equipped with power storage device |
-
2022
- 2022-04-06 CN CN202210353693.7A patent/CN114843105B/en active Active
Patent Citations (13)
| 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 |
| 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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| CN114843105A (en) | 2022-08-02 |
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