CN107068397A - DC frequency-changing electric capacity - Google Patents
DC frequency-changing electric capacity Download PDFInfo
- Publication number
- CN107068397A CN107068397A CN201710311950.XA CN201710311950A CN107068397A CN 107068397 A CN107068397 A CN 107068397A CN 201710311950 A CN201710311950 A CN 201710311950A CN 107068397 A CN107068397 A CN 107068397A
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- Prior art keywords
- electric capacity
- frequency
- weld tabs
- metal
- changing electric
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- 239000004743 Polypropylene Substances 0.000 claims abstract description 40
- -1 polypropylene Polymers 0.000 claims abstract description 40
- 229920001155 polypropylene Polymers 0.000 claims abstract description 40
- 229920003023 plastic Polymers 0.000 claims abstract description 26
- 239000004033 plastic Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000004814 polyurethane Substances 0.000 claims abstract description 18
- 229920002635 polyurethane Polymers 0.000 claims abstract description 18
- 229910000679 solder Inorganic materials 0.000 claims abstract description 7
- 239000000758 substrate Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 51
- 239000002184 metal Substances 0.000 claims description 51
- 210000002469 basement membrane Anatomy 0.000 claims description 21
- 238000007740 vapor deposition Methods 0.000 claims description 13
- 238000004880 explosion Methods 0.000 claims description 12
- 238000007747 plating Methods 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 230000000750 progressive effect Effects 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 239000010408 film Substances 0.000 description 34
- 239000003990 capacitor Substances 0.000 description 19
- 238000004804 winding Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010409 thin film Substances 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
- H01G4/002—Details
- H01G4/228—Terminals
- H01G4/236—Terminals leading through the housing, i.e. lead-through
-
- 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
- H01G4/002—Details
- H01G4/005—Electrodes
-
- 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
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/14—Organic dielectrics
-
- 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
- H01G4/002—Details
- H01G4/224—Housing; Encapsulation
-
- 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
- H01G4/32—Wound capacitors
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The present invention relates to a kind of DC frequency-changing electric capacity, the weld tabs being connected including plastic housing structure, the capacity cell being arranged in plastic housing structure, with capacity cell and the filling polyurethane material poured in plastic housing structure, capacity cell two ends are provided with gilding layer, and the two ends of gilding layer and capacity cell are electrically connected with；It is characterized in that：One end of the weld tabs is the weld zone being connected with capacity cell, and weld zone is connected by solder joint with gilding layer, and the other end of weld tabs is two exits, and two exits stretch out plastic housing structure；The capacity cell is formed using polypropylene wash-in film as rolls of substrate around metallized polypropylene film.Keeper is provided with the weld tabs, the locating slot of keeper and plastic housing inner structural wall matches.One or more liquid-leaking nozzles are provided with the weld tabs.The present invention can lift the production efficiency and performance of DC frequency-changing electric capacity.
Description
Technical field
The present invention relates to a kind of DC frequency-changing electric capacity, especially a kind of antivibration kinetic force height, high pressure, explosive-proof grade be high,
Superelevation insulating properties, small volume, weld tabs torsion are high, the DC frequency-changing electric capacity that electric capacity moisture-proof is good, production efficiency is high and easy to use.
Background technology
DC frequency-changing capacitor is set with its high resistance to ripple current, low ESR, good self-healing performance, safety diaphragm
The features such as meter is more safe and reliable is widely used in fields such as frequency converter, solar inverters.
With expanding economy, in recent years, the emerging industry such as LED illumination, onboard charger, industrial and high-end power supply by
Gradually rise, the application of DC frequency-changing electric capacity is more and more extensive, but restricted by raw material and equipment, cause it to produce in batches
Difficulty, exit easily shift and cause install and it is inconvenient for use, anti-vibration ability and cause electric capacity to be easily affected by the external environment,
Poor insulativity, it is explosive, easily puncture.In other words, current DC frequency-changing electric capacity can not meet those fields to its yield and
The demand of performance.Therefore, the lifting of the production efficiency and self performance of DC frequency-changing capacitor is imperative.
Film, weld tabs, inserts and housing are that DC frequency-changing capacitor manufactures most important base material, and its performance is most
The final performance of capacitor is influenceed in big degree and is used.Therefore, the performance of lifting film, weld tabs, inserts and housing is solution
The certainly main path of this problem.Traditional DC frequency-changing electric capacity use Conventional metallization polypropylene film, its voltage endurance capability by
The limitation of film thickness and coating process.High voltage can be born to electric capacity, then must increase film thickness, then electric capacity volume
It certainly will increase, the use to electric capacity is made troubles.Reduce to electric capacity volume, allow its convenient use, then must reduce film thick
Degree, then the pressure-resistant of electric capacity certainly will reduce, and cause electric capacity to have risk that is explosive, easily puncturing.Meanwhile, traditional DC frequency-changing electric capacity
Using brazing piece exit, the exit convenient welding, using simple.But single weld tabs is drawn, inconvenient for use, and electric capacity during production
Element can not be fixed, low production efficiency, and easily be influenceed by external force, and weld tabs torsion is poor.In addition, traditional DC frequency-changing electric capacity is adopted
With epoxy casting, it can not resist cold, and property is crisp, nonelastic.If in high-temperature operation, capacitor expands because heated, easily cracks epoxy
Resin；And if in low-temperature operation, capacitor shrinks because being cooled, certain gap is easily produced between epoxy resin, so that shadow
Ring the insulating properties of capacitor.In addition, the PBT material that traditional DC frequency-changing electric capacity plastic housing is used, moisture-proof is poor, easily by environment
Influence, has a negative impact to capacitive property.Limited by disadvantages mentioned above, it is temporarily more difficult meet frequency converter, it is LED illumination, vehicle-mounted
The industries such as charger, industrial and high-end power supply, solar inverter are to DC frequency-changing electric capacity yield and the demand of performance.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art there is provided a kind of DC frequency-changing electric capacity, can be lifted
The production efficiency and performance of DC frequency-changing electric capacity.
According to the technical scheme that provides of the present invention, a kind of DC frequency-changing electric capacity, including plastic housing structure, it is arranged at plastic housing structure
Interior capacity cell, the weld tabs being connected with capacity cell and the filling polyurethane material poured in plastic housing structure, capacity cell
Two ends are provided with gilding layer, and the two ends of gilding layer and capacity cell are electrically connected with；It is characterized in that：One end of the weld tabs is and electricity
Hold the weld zone of element connection, weld zone is connected by solder joint with gilding layer, the other end of weld tabs is two exits, and two are drawn
Go out end and stretch out plastic housing structure；The capacity cell is using polypropylene wash-in film as rolls of substrate around metallized polypropylene film
Into.
Further, one or more liquid-leaking nozzles are provided with the weld tabs.
Further, the liquid-leaking nozzle includes the first liquid-leaking nozzle arranged along weld tabs length direction and along weld tabs width
Second liquid-leaking nozzle of arrangement.
Further, the liquid-leaking nozzle includes the first liquid-leaking nozzle positioned at weld tabs top and the second leakage positioned at weld tabs bottom
Fluid apertures.
Further, keeper is provided with the weld tabs, the locating slot of keeper and plastic housing inner structural wall matches.
Further, the wherein layer of metal polypropylene film of the capacity cell uses gradual change type sheet resistance film, described
Gradual change type sheet resistance film includes the first polypropylene basement membrane, metal vapor deposition layer is set on the surface of the first polypropylene basement membrane and without metal steam
Coating stays side, and metal vapor deposition layer is by staying the opposite side thickness progressive additive of the lateral first polypropylene basement membrane in side one；The metal
Layer, which is deposited, includes thickened area and general area, and general area is located between thickened area and Liu Bian, and the thickness of thickened area is more than general area
Thickness.
Further, the wherein layer of metal polypropylene film of the capacity cell uses safety diaphragm, the safety diaphragm
Including the second polypropylene basement membrane, the coat of metal is plated on the second polypropylene basement membrane, so as to form plating on the second polypropylene basement membrane
Have by not plating the first insulating tape separation of the coat of metal between the net region of the coat of metal, adjacent mesh region, adjacent
The center partially plating gold of the first insulating tape between two net regions belongs to coating formation anti-explosion filaments, and anti-explosion filaments are by the first insulating tape
The net region for being coated with the coat of metal of both sides is electrically connected with；Formed in one end plating coat of metal of the second polypropylene basement membrane
Strip region, arranges multiple the second insulating tapes for not plating the coat of metal, adjacent between the strip region and net region
Coat of metal formation anti-explosion filaments are plated between two insulating tapes to be electrically connected with the coat of metal of the second insulating tape both sides.
Further, the metal vapor deposition layer is zinc-aluminium-vapour deposition layer.
Further, the coat of metal is using zinc and the composite deposite of aluminium.
Further, the filling polyurethane material uses high temperature polyurethane.
The present invention has advantages below：
（1）Different techniques are respectively adopted in the double-layer filmses of electric capacity of the present invention, and one layer is normal film, and metal level is designed as gradually
Variant sheet resistance；Another layer film uses latticed safety diaphragm, and both corresponding matchings can be substantially improved the compressive resistance of electric capacity and prevent
Grade is protected, is conducive to the miniaturization of capacitor volume, and its security is also higher.
（2）The present invention use novel coiling machine, can the hollow winding of spindle-less, production cost can be saved by saving mandrel, simultaneously
Be conducive to the miniaturization of capacitor volume.Further, since capacity cell inner hollow, when pouring inserts, inserts can be direct
Penetrate into inside capacity cell so that capacity cell inner core is directly in contact with Insulation stopping, therefore can be substantially improved in electric capacity
Portion's insulating properties.
（3）The present invention draws design using double weld tabs so that the use of electric capacity is more facilitated.
（4）The present invention is designed with locating slot using double draw on weld tabs, weld tabs, is conducive to element determining in electric capacity housing
Position, can greatly improve production efficiency.Meanwhile, capacity cell, weld tabs and housing three are fastened to each other so that the antivibration kinetic energy of electric capacity
Power is substantially improved（The DC frequency-changing electric capacity that original weld tabs makes, it is under 10 ~ 55Hz frequencies, and acceleration is 5g, and its amplitude A is about
For 0.35mm；New double DC frequency-changing electric capacity for drawing weld tabs making, it is under 10 ~ 600Hz frequencies, and acceleration is 10g, its
Amplitude A ＞ 0.5mm.That is antivibration kinetic force is substantially improved）.Meanwhile, oval liquid-leaking nozzle is designed with the weld tabs, filling is being poured
During material, due to the presence of liquid-leaking nozzle, inserts will be more easy to down ooze, and its elliptic design will also increase filling to the full extent
The flow area of material and the flow resistance for reducing inserts, make it easy to production, greatly improve production efficiency.Meanwhile, inserts
Liquid-leaking nozzle will be oozed mutually to fix with element, the presence of liquid-leaking nozzle inner filling material causes the fastness of weld tabs to be obviously improved, torsion increase.
Therefore, when weld tabs is by equal external force, degree of deformation is smaller.In addition, capacity cell can be completely covered by liquid-leaking nozzle in inserts,
So as to improve the insulating properties inside electric capacity.
（5）The present invention is using high temperature polyurethane as inserts, and its weatherability and ageing-resistant performance are excellent, and service life can
More than 20 years；And this kind of inserts also has good cold resistance, heat resistance and anti-flammability, for lifting capacitor performance
And its service life is of great advantage.
（6）The capacitance shell of the present invention uses the PBT material of low content of glass fiber, its with electric capacity inside inserts knot
Conjunction property more preferably, almost can seamless combination；Outer surface is finer and smoother, smooth so that electric capacity outward appearance, feel are obviously improved.And should
Material moisture-proof is splendid, is hardly affected by the external environment so that in the environment of high humidity, the influence to capacitor quality
It is minimum, it is almost negligible to disregard.
Brief description of the drawings
Fig. 1 is the structural representation of DC frequency-changing electric capacity of the present invention.
Fig. 2-1 is the structural representation of the weld tabs.
Fig. 2-2 is Fig. 2-1 side view.
Fig. 2-3 is Fig. 2-1 top view.
Fig. 3-1 is the schematic diagram of the plastic housing structure.
Fig. 3-2 is Fig. 3-1 side view.
Fig. 3-3 is Fig. 3-1 top view.
Fig. 4-1 is the structural representation of the gradual change type sheet resistance film.
Fig. 4-2 is Fig. 4-1 side view.
Fig. 4-3 is Fig. 4-1 top view.
Fig. 5-1 is the schematic diagram of the safety diaphragm before breakdown.
Fig. 5-2 is schematic diagram of the safety diaphragm after puncturing.
Description of reference numerals：1- weld tabs, 2- plastic housings structure, 3- capacity cells, 4- polypropylene wash-ins film, 5- gilding layers, 6-
Solder joint, 7- filling polyurethanes material, 8- weld zones, the liquid-leaking nozzles of 9- first, 10- keepers, the liquid-leaking nozzles of 11- second, 12- exits,
13- locating slots, 14- stay side, 15- general areas, 16- thickened areas, the first polypropylene of 17- basement membrane, the insulating tapes of 18- first, 19- grids
Region, the insulating tapes of 20- second, 21- anti-explosion filaments, the 22- coats of metal.
Embodiment
With reference to specific accompanying drawing, the invention will be further described.
As shown in figure 1, DC frequency-changing electric capacity of the present invention includes plastic housing structure 2, the electric capacity being arranged in plastic housing structure 2
Element 3, the weld tabs 1 being connected with capacity cell 3 and the filling polyurethane material 7 poured in plastic housing structure 2；Wherein, electric capacity member
The two ends of part 3 are provided with gilding layer 5, and the two ends of gilding layer 5 and capacity cell 3 are electrically connected with, the weld zone of weld tabs 1 passes through solder joint 6
It is connected with gilding layer 5, solder joint 6 is tin welding spot.
As shown in Fig. 2-1, Fig. 2-2, Fig. 2-3, one end of the weld tabs 1 is the weld zone 8 being connected with capacity cell 3, weldering
The other end of piece 1 is symmetrically arranged two exits 12 so that the use of electric capacity is more facilitated；Set on the weld tabs 1
First liquid-leaking nozzle 9 and the second liquid-leaking nozzle 11, the first liquid-leaking nozzle 9 and the second liquid-leaking nozzle 11 are Long Circle, and the first liquid-leaking nozzle 9 is set
Arranged in the top of weld tabs 1, along the length direction of weld tabs 1, the second liquid-leaking nozzle 11 is arranged at the bottom of weld tabs 1, the width along weld tabs 1
Spend direction arrangement；Due to the presence of the first liquid-leaking nozzle 9 and the second liquid-leaking nozzle 11, under filling polyurethane material 7 will be more easy to when pouring
Ooze, and the first liquid-leaking nozzle 9 and the second liquid-leaking nozzle 11 obround design also will to the full extent increase inserts flowing
Area and the flow resistance for reducing inserts, consequently facilitating production, greatly improves production efficiency；Meanwhile, filling polyurethane material 7 will
Oozed the first liquid-leaking nozzle 9 mutually to fix with the capacity cell 3 of the second liquid-leaking nozzle 411, the first liquid-leaking nozzle 9 and the cohesion ammonia of the second liquid-leaking nozzle 11
The presence of ester inserts 7 causes the fastness of weld tabs to be obviously improved, torsion increase.Therefore, when weld tabs 1 is by equal external force, become
Shape degree is smaller.In addition, capacity cell 3 can be completely covered by the first liquid-leaking nozzle 9 and the second liquid-leaking nozzle 11 in filling polyurethane material 7,
So as to improve the insulating properties inside electric capacity.
In addition, keeper 10 is provided with the weld tabs 1, the plastic housing structure 2 of keeper 10 and DC frequency-changing capacitor
The locating slot 13 of inwall matches（As shown in Fig. 3-1, Fig. 3-2, Fig. 3-3）；This is designed with electric capacity when being assembled beneficial to capacity cell 3
Positioning of the element 3 in plastic housing structure 2, the position of weld tabs 1 will more be unified and be that electric capacity subsequent use and installation are carried precisely
Facility is supplied.Simultaneously as the keeper 10 make it that capacity cell 3, weld tabs 1 and the three of plastic housing structure 2 are fastened to each other, significantly carry
The antivibration kinetic force of electric capacity is risen.The DC frequency-changing electric capacity that existing weld tabs makes, it is under 10 ~ 55Hz frequencies, and acceleration is 5g,
Its amplitude A is about 0.35mm；DC frequency-changing electric capacity of the present invention, it is under 10 ~ 600Hz frequencies, and acceleration is 10g, its
Amplitude A ＞ 0.5mm, i.e. antivibration kinetic force is substantially improved.
The plastic housing structure 2 is PBT plastic housings, but it uses the PBT material of low content of glass fiber, its with inside electric capacity
The associativity of filling polyurethane material 7 more preferably, almost can seamless combination, outer surface is finer and smoother, smooth so that electric capacity outward appearance, hand
Sense, hence it is evident that lifting.It is right and the material moisture-proof is splendid, is hardly affected by the external environment so that in the environment of high humidity
The influence of capacitor quality is also minimum, almost negligible to disregard.
The capacity cell 3 is formed using polypropylene wash-in film 4 as rolls of substrate around metallized polypropylene film.
The wherein layer of metal polypropylene film of the capacity cell 3 use gradual change type sheet resistance film, such as Fig. 4-1, Fig. 4-
2nd, shown in Fig. 4-3, the gradual change type sheet resistance film includes the first polypropylene basement membrane 17, is set on the surface of the first polypropylene basement membrane 17
Metal vapor deposition layer and side 14 is stayed without metal vapor deposition layer, metal vapor deposition layer is by staying the another of the lateral first polypropylene basement membrane 17 in side 14 1
Side thickness progressive additive, section is roughly triangular, and the voltage endurance capability of film can be substantially improved in the design, be conducive to capacitance body
Long-pending miniaturization；The metal vapor deposition layer is zinc-aluminium-vapour deposition layer, and metal vapor deposition layer includes thickened area 16 and general area 15, commonly
Area 15 is located between thickened area 16 and Liu Bian 14, and the thickness of thickened area 16 is more than the thickness of general area 15.
Another layer of metallized polypropylene film of the capacity cell 3 uses safety diaphragm, as shown in fig. 5-1, the safety
Film includes the second polypropylene basement membrane, the coat of metal 22 is plated on the second polypropylene basement membrane, so that the shape on the second polypropylene basement membrane
Into the net region 19 for being coated with the coat of metal 22, by not plating 18 points of the first insulating tape of the coat of metal between adjacent mesh region 19
Every, the center partially plating gold of the first insulating tape 18 between two adjacent net regions 19 belongs to coating formation anti-explosion filaments 21,
The net region 19 for being coated with the coat of metal of the both sides of first insulating tape 18 is electrically connected with by anti-explosion filaments；In second polypropylene-base
One end plating formation strip region of the coat of metal 22 of film, arranges between the strip region and net region 19 and multiple does not plate metal
Coat of metal formation anti-explosion filaments 21 are plated between second insulating tape 20 of coating, the second adjacent insulating tape 20 by the second insulating tape 20
The coat of metal 22 of both sides is electrically connected with.The above-mentioned coat of metal 22 is using zinc and the composite deposite of aluminium.
When the electric current that capacitor is flowed through in circuit is excessive, due to the effect of supercurrent, make the anti-explosion filaments 21 on safety diaphragm
Fusing, after anti-explosion filaments 21 are blown, the formation open-circuit condition of the coat of metal 22 of the net region 19 of the both sides of the first insulating tape 18, together
When the both sides of the second insulating tape 20 the coat of metal 22 also form open-circuit condition, as shown in Fig. 5-2（After puncturing）.It is adjacent on safety diaphragm
Net region shape 19 and strip region disconnect after the current path between gilding layer 5 is blocked, allow current to enough completely return
Zero, thus explosion-proof effect can be played.That is, the thickness of the design of plated film shape and the coat of metal 22 can be big on safety diaphragm
Width lifts the degree of protection of film.
Capacity cell 3 of the present invention is using gradual change type sheet resistance film with latticed safety diaphragm between the two every the special work of winding
Skill, two kinds of mutual corresponding matchings of film, can be substantially improved the compressive resistance and degree of protection of electric capacity, be conducive to capacitor volume
Miniaturization, and its security is also higher.
The polypropylene wash-in film 4 is due to use novel coiling machine, can the hollow winding of spindle-less, polypropylene wash-in film 4
As substrate, production cost can be saved by eliminating mandrel, while being conducive to the miniaturization of capacitor volume.Further, since electric capacity
Element internal is hollow, pour inserts when, inserts directly can be penetrated into inside capacity cell so that capacity cell inner core directly with
Insulation stopping is in contact, therefore electric capacity built-in electrical insulation can be substantially improved.
The filling polyurethane material 7 uses high temperature polyurethane, and its weatherability and ageing-resistant performance are excellent, service life
Can be more than 20 years；And this kind of inserts also has good cold resistance, heat resistance and anti-flammability, for lifting capacitor
Energy and its service life are of great advantage.
DC frequency-changing electric capacity of the present invention uses spindle-less winding technique, is directly used as mandrel using polypropylene wash-in film 4
Capacity cell 3 is rolled out, the two ends of capacity cell 3 are sprayed with gilding layer 5, both are electrically connected with, gilding layer 5 passes through solder joint 6 and the phase of weld tabs 1
Even, connect by being weldingly connected, using weld tabs 1 as electric capacity exit, capacitive insulation inserts is used as using filling polyurethane material 7.
Relative to other DC frequency-changing electric capacity, DC frequency-changing electric capacity of the present invention have antivibration kinetic force height, high pressure,
Explosive-proof grade height, the property such as superelevation insulating properties, small volume, weld tabs torsion are high, electric capacity moisture-proof is good, production efficiency is high and easy to use
Energy.Different techniques are respectively adopted for two layers in the film of the electric capacity, and one layer is normal film, and metal level is designed as gradual change type sheet resistance, separately
Thin film uses latticed safety diaphragm, and the compressive resistance and degree of protection of electric capacity can be substantially improved, favorably in both corresponding matchings
In the miniaturization of capacitor volume, and its security is also higher.In addition, the new spindle-less winding technique that the electric capacity is used, can
Production cost is saved, is conducive to the miniaturization of capacitor volume, and the insulating properties inside electric capacity is substantially improved.Meanwhile, the electric capacity
Using the new double extraction weld tabs of one kind, the insulating properties inside antivibration kinetic force, production efficiency and the electric capacity of electric capacity can be substantially improved,
And increase the torsion of weld tabs.In addition, the electric capacity uses high temperature polyurethane as inserts, its weatherability and ageing-resistant performance are excellent
Good, service life is long；And this kind of inserts also has good cold resistance, heat resistance and anti-flammability, for lifting electric capacity
Device performance and its service life are of great advantage.Meanwhile, the electric capacity uses the PBT material of low content of glass fiber, can improve electricity
The moisture-proof of appearance, harmful effect of the reduction humidity to capacitive property.
Claims (10)
1. a kind of DC frequency-changing electric capacity, including plastic housing structure（2）, be arranged at plastic housing structure（2）Interior capacity cell（3）And electricity
Hold element（3）The weld tabs of connection（1）And pour in plastic housing structure（2）In filling polyurethane material（7）, capacity cell（3）Two
That holds is provided with gilding layer（5）, gilding layer（5）With capacity cell（3）Two ends be electrically connected with；It is characterized in that：The weld tabs（1）'s
One end is and capacity cell（3）The weld zone of connection（8）, weld zone（8）Pass through solder joint（6）With gilding layer（5）Connection, weld tabs
（1）The other end be two exits（12）, two exits（12）Stretch out plastic housing structure（2）；The capacity cell（3）Using
Polypropylene wash-in film（4）Formed as rolls of substrate around metallized polypropylene film.
2. DC frequency-changing electric capacity as claimed in claim 1, it is characterized in that：In the weld tabs（1）On be provided with it is one or more
Liquid-leaking nozzle.
3. DC frequency-changing electric capacity as claimed in claim 2, it is characterized in that：The liquid-leaking nozzle is included along weld tabs（1）Length direction
First liquid-leaking nozzle of arrangement（9）With along weld tabs（1）Second liquid-leaking nozzle of width arrangement（11）.
4. DC frequency-changing electric capacity as claimed in claim 2, it is characterized in that：The liquid-leaking nozzle includes being located at weld tabs（1）Top
First liquid-leaking nozzle（9）With positioned at weld tabs（1）Second liquid-leaking nozzle of bottom（11）.
5. DC frequency-changing electric capacity as claimed in claim 1, it is characterized in that：In the weld tabs（1）On be provided with keeper（10）,
Keeper（10）With plastic housing structure（2）The locating slot of inwall（13）Match.
6. the DC frequency-changing electric capacity as described in claim any one of 1-5, it is characterized in that：The capacity cell（3）Wherein one
Layer metallized polypropylene film uses gradual change type sheet resistance film, and the gradual change type sheet resistance film includes the first polypropylene basement membrane（17）,
First polypropylene basement membrane（17）Surface set and metal vapor deposition layer and stay side without metal vapor deposition layer（14）, metal vapor deposition layer is by staying
Side（14）One lateral first polypropylene basement membrane（17）Opposite side thickness progressive additive；The metal vapor deposition layer includes thickened area
（16）And general area（15）, general area（15）Positioned at thickened area（16）With stay side（14）Between, thickened area（16）Thickness be more than
General area（15）Thickness.
7. the DC frequency-changing electric capacity as described in claim any one of 1-5, it is characterized in that：The capacity cell（3）Wherein one
Layer metallized polypropylene film uses safety diaphragm, and the safety diaphragm includes the second polypropylene basement membrane, on the second polypropylene basement membrane
Plate the coat of metal（22）, the coat of metal is coated with so as to be formed on the second polypropylene basement membrane（22）Net region（19）, it is adjacent
Net region（19）Between by not plating the first insulating tape of the coat of metal（18）Separate, in two adjacent net regions（19）It
Between the first insulating tape（18）Center partially plating gold belong to coating formation anti-explosion filaments（21）, anti-explosion filaments（21）By the first insulating tape
（18）The net region for being coated with the coat of metal of both sides（19）It is electrically connected with；Metal is plated in one end of the second polypropylene basement membrane
Coating（22）Strip region is formed, in the strip region and net region（19）Between arrange and multiple do not plate the second of the coat of metal
Insulating tape（20）, adjacent the second insulating tape（20）Between plating the coat of metal formation anti-explosion filaments（21）By the second insulating tape（20）Two
The coat of metal of side（22）It is electrically connected with.
8. DC frequency-changing electric capacity as claimed in claim 6, it is characterized in that：The metal vapor deposition layer is zinc-aluminium-vapour deposition layer.
9. DC frequency-changing electric capacity as claimed in claim 7, it is characterized in that：The coat of metal（22）Using the compound of zinc and aluminium
Coating.
10. DC frequency-changing electric capacity as claimed in claim 1, it is characterized in that：The filling polyurethane material（7）Use high temperature
Polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710311950.XA CN107068397A (en) | 2017-05-05 | 2017-05-05 | DC frequency-changing electric capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710311950.XA CN107068397A (en) | 2017-05-05 | 2017-05-05 | DC frequency-changing electric capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107068397A true CN107068397A (en) | 2017-08-18 |
Family
ID=59595887
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710311950.XA Pending CN107068397A (en) | 2017-05-05 | 2017-05-05 | DC frequency-changing electric capacity |
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| Country | Link |
|---|---|
| CN (1) | CN107068397A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3845658B2 (en) * | 1998-05-01 | 2006-11-15 | 日本ケミコン株式会社 | Low inductance capacitor |
| CN2879375Y (en) * | 2006-04-04 | 2007-03-14 | 浙江南洋电子薄膜有限公司 | Electrode structure for metalied safety film capacitor |
| CN202678109U (en) * | 2012-07-16 | 2013-01-16 | 佛山市意壳电容器有限公司 | High square resistance metallization polymer film capacitor |
| CN106098372A (en) * | 2016-08-19 | 2016-11-09 | 浙江五峰电容器有限公司 | The heat-resisting moisture-proof structure of capacitor |
| CN206947175U (en) * | 2017-05-05 | 2018-01-30 | 无锡宏广电容器有限公司 | DC frequency-changing electric capacity |
-
2017
- 2017-05-05 CN CN201710311950.XA patent/CN107068397A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3845658B2 (en) * | 1998-05-01 | 2006-11-15 | 日本ケミコン株式会社 | Low inductance capacitor |
| CN2879375Y (en) * | 2006-04-04 | 2007-03-14 | 浙江南洋电子薄膜有限公司 | Electrode structure for metalied safety film capacitor |
| CN202678109U (en) * | 2012-07-16 | 2013-01-16 | 佛山市意壳电容器有限公司 | High square resistance metallization polymer film capacitor |
| CN106098372A (en) * | 2016-08-19 | 2016-11-09 | 浙江五峰电容器有限公司 | The heat-resisting moisture-proof structure of capacitor |
| CN206947175U (en) * | 2017-05-05 | 2018-01-30 | 无锡宏广电容器有限公司 | DC frequency-changing electric capacity |
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