CN103337364B - Noninductive capacitor - Google Patents
Noninductive capacitor Download PDFInfo
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- CN103337364B CN103337364B CN201310244810.7A CN201310244810A CN103337364B CN 103337364 B CN103337364 B CN 103337364B CN 201310244810 A CN201310244810 A CN 201310244810A CN 103337364 B CN103337364 B CN 103337364B
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Abstract
The present invention relates to a kind of noninductive capacitor, comprise aluminium shell and capacity cell, between aluminium shell and capacity cell, be provided with thin-film body, in the plug in the middle part of capacity cell, lead-in wire is set; Explosion-proof end cover is provided with in the upper end of described aluminium shell, the edge of explosion-proof end cover rolls tightly sealing along aluminium shell, at explosion-proof end cover arranged outside weld tabs, and seals with plastic sheath, burst disk is set inside explosion-proof end cover, fixed bridge is set between burst disk and explosion-proof end cover; Arrange Copper Foil in the downside of described burst disk, arrange solid rivet through burst disk, one end of solid rivet and the upper end spot welding of Copper Foil, the other end is through fixed bridge and explosion-proof end cover, and the lower end of Copper Foil is welded with the upper end of lead-in wire; Feature is: the two ends up and down of described capacity cell are respectively in sinusoidal wave shape, and zinc layers is established in spray at the edge of capacity cell upper and lower side.The present invention can increase the contact area between capacity cell and zinc layers, reduces equivalent series resistance, and reduce heating, high frequency performance is more excellent, longer service life.
Description
Technical field
The present invention relates to a kind of noninductive capacitor, especially a kind of noninductive capacitor that can be used for high-frequency apparatus.
Background technology
In order to the safe handling of household electrical appliance, air material and some highly sophisticated device equipment, as solar energy contravariant equipment, the capacitor that wind power plant, electric automobile use needs noninductive capacitor.Existing noninductive capacitor has various structures, as patent application 201010212579 discloses a kind of metallic film capacitor, it comprises shell and is positioned at the capacitor body of shell, it is characterized in that the upper end of described shell is provided with capping, capping is coated with epoxy resin layer, jointly form seal with shell, the capacitor body in seal and be castor oil between shell, leading-out terminal bottom is electrically connected with capacitor body through epoxy resin layer and capping.Above-mentioned capacitor is on common housed device, the effect of the moment of torsion of fine energy storage filtering and change motor can be played, but inductance value is bigger than normal, the use of easily other parts of interference on high equipment is required at some charge-discharge characteristics, and the contact resistance of gilding layer and fuse is bigger than normal, cause loss higher, can only for the lower electric equipment of frequency, and capacitor life-span is not high.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of noninductive capacitor is provided, solve the interference of inductance, can be used on high-frequency apparatus simultaneously, while reducing the wastage, improve the useful life of capacitor, make capacitor use safety and reliability.
According to technical scheme provided by the invention, a kind of noninductive capacitor, comprises aluminium shell and is encapsulated in the capacity cell in aluminium shell, between aluminium shell and capacity cell, be provided with thin-film body, in plug in the middle part of capacity cell, lead-in wire is set, is respectively equipped with plastic sheath at the two ends up and down of capacity cell; Explosion-proof end cover is provided with in the upper end of described aluminium shell, the edge of explosion-proof end cover rolls tightly sealing along aluminium shell, at explosion-proof end cover arranged outside weld tabs, and seals with plastic sheath, burst disk is set inside explosion-proof end cover, fixed bridge is set between burst disk and explosion-proof end cover; Arrange Copper Foil in the downside of described burst disk, arrange solid rivet through burst disk, one end of solid rivet and the upper end spot welding of Copper Foil, the other end is through fixed bridge and explosion-proof end cover, and the lower end of Copper Foil is welded with the upper end of lead-in wire; Feature is: the two ends up and down of described capacity cell are respectively in sinusoidal wave shape, and zinc layers is established in spray at the edge of capacity cell upper and lower side, and as the two poles of the earth of lead-in wire, zinc layers is sinusoidal wave shape.
Filler is filled with in described aluminium enclosure.
The thickness of described Copper Foil is 0.8mm.
Described thin-film body adopts polypropylene film.
Sealed by sealing ring between described explosion-proof end cover and solid rivet.
Compared with prior art, structural design of the present invention is more reasonable, and sinusoidal wave fillet can increase the contact area between capacity cell and zinc layers, reduce equivalent series resistance, reduce heating, high frequency performance is more excellent, longer service life, simultaneously, the sine wave used is contrary with the inherent inductance polarity of capacitor, thus forms noninductive electric capacity, inner half tin spot welded type proof assembl, while raising high frequency performance, capacitor safe can be made explosion-proof.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with concrete accompanying drawing, the invention will be further described.
As shown in Figure 1: described noninductive capacitor comprises weld tabs 1, plastic sheath 2, solid rivet 3, Copper Foil 4, zinc layers 5, filler 6, capacity cell 7, lead-in wire 8, aluminium shell 9, plastic sheath 10, sealing ring 11, thin-film body 12, plug 13, explosion-proof end cover 14, burst disk 15, fixed bridge 16 etc.
As shown in Figure 1, the capacity cell 7 that the present invention includes aluminium shell 9 and be encapsulated in aluminium shell 9, between aluminium shell 9 and capacity cell 7, be provided with thin-film body 12, in the plug 13 in the middle part of capacity cell 7, lead-in wire 8 is set, be respectively equipped with plastic sheath 10 at the two ends up and down of capacity cell 7; Explosion-proof end cover 14 is provided with in the upper end of described aluminium shell 9, the edge of explosion-proof end cover 14 rolls tightly sealing along aluminium shell 9, at explosion-proof end cover 14 arranged outside weld tabs 1, and seal with plastic sheath 2, burst disk 15 is set inside explosion-proof end cover 14, fixed bridge 16 is set between burst disk 15 and explosion-proof end cover 14; In the downside of described burst disk 15, Copper Foil 4 is set, through burst disk 15, solid rivet 3 is set, one end of solid rivet 3 and the upper end spot welding of Copper Foil 4, the other end is through fixed bridge 16 and explosion-proof end cover 14, sealed by sealing ring 11 between explosion-proof end cover 14 and solid rivet 3, the lower end of Copper Foil 4 is welded with the upper end of lead-in wire 8;
The two ends up and down of described capacity cell 7 are respectively in sinusoidal wave shape, and zinc layers 5 is established in spray at the edge of capacity cell 7 upper and lower side, and as the two poles of the earth of lead-in wire 8, zinc layers 5 is in sinusoidal wave shape; Amplitude A=π the fCU of the sine wave of described zinc layers 5, wherein, f is frequency of utilization, and C is condenser capacity, and U is rated capacitor voltage; Described sinuous zinc layers 5 can increase the contact area between zinc layers 5 and capacity cell 7, reduces equivalent series resistance, and reduce heating, high frequency performance is more excellent, longer service life; Meanwhile, the sine wave shape of zinc layers 5 is contrary with the inherent inductance polarity of capacitor, thus forms noninductive electric capacity;
Filler 6 is filled with in described aluminium shell 9 inside;
The thickness of described Copper Foil 4 is 0.8mm, at the spot welding place not scolding tin of Copper Foil 4 with solid rivet 3;
Described thin-film body 12 adopts polypropylene film.
Operation principle of the present invention: capacity is drawn by the fillet of capacity cell 7 sine wave shape and zinc layers 5 capacity that realizes that contacts with each other, high frequency tolerant, and contact area increases, and loss value reduces; After capacity cell 7 punctures, due to gas expansion effect, explosion-proof end cover 14 is out of shape, more center, climb is more, and solid rivet 3 place, displacement is larger, cause the stripping between solid rivet 3 and Copper Foil 4, thus capacitor internal is opened a way, reach explosion-proof effect.In the production operation process of capacitor of the present invention, the thickness of Copper Foil 4, the shape of solid rivet 3, the fastness of spot welding, the sealing of aluminium shell 9 determines the overall performance of product and explosion-proof reliability.
Claims (4)
1. a noninductive capacitor, comprise aluminium shell (9) and be encapsulated in the capacity cell (7) in aluminium shell (9), thin-film body (12) is provided with between aluminium shell (9) and capacity cell (7), lead-in wire (8) is set in the plug (13) at capacity cell (7) middle part, is respectively equipped with plastic sheath (10) at the two ends up and down of capacity cell (7); Explosion-proof end cover (14) is provided with in the upper end of described aluminium shell (9), the edge of explosion-proof end cover (14) rolls tightly sealing along aluminium shell (9), at explosion-proof end cover (14) arranged outside weld tabs (1), and seal with plastic sheath (2), burst disk (15) is set in explosion-proof end cover (14) inner side, fixed bridge (16) is set between burst disk (15) and explosion-proof end cover (14); In the downside of described burst disk (15), Copper Foil (4) is set, through burst disk (15), solid rivet (3) is set, one end of solid rivet (3) and the upper end spot welding of Copper Foil (4), the other end is through fixed bridge (16) and explosion-proof end cover (14), and the lower end of Copper Foil (4) is welded with the upper end of lead-in wire (8); It is characterized in that: the two ends up and down of described capacity cell (7) are respectively in sinusoidal wave shape, and zinc layers (5) is established in spray at the edge of capacity cell (7) upper and lower side, and as the two poles of the earth of lead-in wire (8), zinc layers (5) is in sinusoidal wave shape;
Amplitude A=π the fCU of the sine wave of described zinc layers (5), wherein, f is frequency of utilization, and C is condenser capacity, and U is rated capacitor voltage; Described sinuous zinc layers (5) can increase the contact area between zinc layers (5) and capacity cell (7); The sine wave shape of zinc layers (5) is contrary with the inherent inductance polarity of capacitor, thus forms noninductive electric capacity.
2. noninductive capacitor as claimed in claim 1, is characterized in that: be filled with filler (6) in described aluminium shell (9) inside.
3. noninductive capacitor as claimed in claim 1, is characterized in that: the thickness of described Copper Foil (4) is 0.8mm.
4. noninductive capacitor as claimed in claim 1, is characterized in that: described thin-film body (12) adopts polypropylene film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310244810.7A CN103337364B (en) | 2013-06-19 | 2013-06-19 | Noninductive capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310244810.7A CN103337364B (en) | 2013-06-19 | 2013-06-19 | Noninductive capacitor |
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| Publication Number | Publication Date |
|---|---|
| CN103337364A CN103337364A (en) | 2013-10-02 |
| CN103337364B true CN103337364B (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310244810.7A Active CN103337364B (en) | 2013-06-19 | 2013-06-19 | Noninductive capacitor |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701013B (en) * | 2013-12-04 | 2017-12-29 | 柯贝尔电能质量技术（上海）有限公司 | A kind of capacitor |
| CN105118668B (en) * | 2015-09-24 | 2018-02-09 | 宁波碧彩实业有限公司 | A kind of explosion-proof combined capacitor |
| CN109903993A (en) * | 2019-04-23 | 2019-06-18 | 无锡宏广电容器有限公司 | The integrated end cap of polypropylene film capacitor |
| CN110108572A (en) * | 2019-06-12 | 2019-08-09 | 无锡宏广电容器有限公司 | Polypropylene film capacitor end cap explosion-proof pressure measuring appliance |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1136211A (en) * | 1994-12-21 | 1996-11-20 | 松下电器产业株式会社 | Capacitor |
| CN2705870Y (en) * | 2004-05-27 | 2005-06-22 | 厦门法拉电子股份有限公司 | Metalized film for producing film capacitor |
| CN201007944Y (en) * | 2007-01-26 | 2008-01-16 | 唐军 | Great current impact resistant metallizing polypropylene film medium middle, high pressure fixed capacitor |
| CN101770864A (en) * | 2010-02-10 | 2010-07-07 | 无锡宏广电容器有限公司 | Foil-type end-cover explosion-proof capacitor |
| CN202905471U (en) * | 2012-10-12 | 2013-04-24 | 安徽省宁国市麦特电器有限公司 | High temperature wave-cutting safety film capacitor |
| CN203351424U (en) * | 2013-06-19 | 2013-12-18 | 无锡宏广电容器有限公司 | Non-inductive capacitor |
-
2013
- 2013-06-19 CN CN201310244810.7A patent/CN103337364B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1136211A (en) * | 1994-12-21 | 1996-11-20 | 松下电器产业株式会社 | Capacitor |
| CN2705870Y (en) * | 2004-05-27 | 2005-06-22 | 厦门法拉电子股份有限公司 | Metalized film for producing film capacitor |
| CN201007944Y (en) * | 2007-01-26 | 2008-01-16 | 唐军 | Great current impact resistant metallizing polypropylene film medium middle, high pressure fixed capacitor |
| CN101770864A (en) * | 2010-02-10 | 2010-07-07 | 无锡宏广电容器有限公司 | Foil-type end-cover explosion-proof capacitor |
| CN202905471U (en) * | 2012-10-12 | 2013-04-24 | 安徽省宁国市麦特电器有限公司 | High temperature wave-cutting safety film capacitor |
| CN203351424U (en) * | 2013-06-19 | 2013-12-18 | 无锡宏广电容器有限公司 | Non-inductive capacitor |
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| CN103337364A (en) | 2013-10-02 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Non inductive capacitor Effective date of registration: 20210224 Granted publication date: 20160210 Pledgee: Bank of China Co.,Ltd. Wuxi High tech Industrial Development Zone Branch Pledgor: WUXI HONGGUANG CAPACITOR Co.,Ltd. Registration number: Y2021980001300 |
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Date of cancellation: 20220506 Granted publication date: 20160210 Pledgee: Bank of China Co.,Ltd. Wuxi High tech Industrial Development Zone Branch Pledgor: WUXI HONGGUANG CAPACITOR Co.,Ltd. Registration number: Y2021980001300 |