CN203706875U - Metallic film capacitor - Google Patents
Metallic film capacitor Download PDFInfo
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- CN203706875U CN203706875U CN201420112399.8U CN201420112399U CN203706875U CN 203706875 U CN203706875 U CN 203706875U CN 201420112399 U CN201420112399 U CN 201420112399U CN 203706875 U CN203706875 U CN 203706875U
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- Prior art keywords
- thickening part
- layer
- thin film
- limit
- film
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- 239000003990 capacitor Substances 0.000 title claims abstract description 44
- 239000002184 metal Substances 0.000 claims abstract description 66
- 229910052751 metal Inorganic materials 0.000 claims abstract description 66
- 230000008719 thickening Effects 0.000 claims abstract description 61
- 239000003989 dielectric material Substances 0.000 claims description 44
- 239000010409 thin film Substances 0.000 claims description 44
- 239000011104 metalized film Substances 0.000 claims description 32
- 239000010408 film Substances 0.000 claims description 30
- 239000011159 matrix material Substances 0.000 claims description 19
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001465 metallisation Methods 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract 3
- 238000012360 testing method Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 13
- 238000005507 spraying Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 229920002545 silicone oil Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The utility model discloses a metallic film capacitor, relates to the field of electrical elements, and solves the technical problems that after wound metallic films are pressed in the prior art, tight attachment between metal electrodes cannot be guaranteed, more air is remained, and the probability of air breakdown in a high-pressure state is higher. The capacitor comprises at least two layers of metallic films, each metallic film comprises a film dielectric layer and metal electrodes arranged on the film dielectric layer at intervals, and a middle margin is reserved between adjacent metal electrodes; and each metal electrode comprises a substrate and a thickening part arranged on the substrate, the thickening parts of two adjacent layers of metallic films correspond to the middle margins of the other layer of metallic film, and after the metallic films are wound and pressed, the thickening parts are embedded into the middle margins and tightly attached between adjacent substrates. The metallic film capacitor is applied to electrical equipment.
Description
[technical field]
The utility model relates to a kind of electric component, especially a kind of capacitor.
[background technology]
The metallized film of existing capacitor comprises dielectric layer and is disposed on the metal electrode on medium, metal electrode interval arranges, cause between adjacent metal electrode and separate completely, therefore between adjacent metal electrode, leave space, after the metallized film of reeling is flattened, can not guarantee to fit tightly between metal electrode, residual air is many, simultaneously deaeration completely after vacuum intruded pitch, the probability that produces air breakdown under high pressure conditions is larger.
[summary of the invention]
The technical problem that the utility model solves is to provide a kind of metallic film capacitor, and capacitor internal fits tightly, and has reduced air residual.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of metallic film capacitor, comprise at least double-layer metallization film, described metallized film comprises thin film dielectrics layer and is disposed on the metal electrode on thin film dielectrics layer, in the middle of being provided with between adjacent metal electrode, stay limit, described metal electrode comprises matrix and is located at the thickening part on matrix, in adjacent two layers metallized film, thickening part stays limit corresponding with the centre on another layer of metallized film, metallized film is reeled after compacting, Liu Biannei in the middle of described thickening part is embedded in, thickening part is adjacent between adjacent matrix.
Further, described thin film dielectrics layer one end is provided with Shang Liu limit, limit.
Further, on the described thin film dielectrics layer other end, the thickness of the thickening part of metal electrode is greater than the thickness of the thickening part of all the other metal electrodes on this thin film dielectrics layer.
Further, the thickness that is positioned at the thickening part of described thin film dielectrics layer end is the twice of all the other thickening part thickness on this thin film dielectrics layer.
Further, in adjacent two layers metallized film, be positioned on the thickening part of described thin film dielectrics layer end and another layer film dielectric layer the homonymy setting of Shang Liubian one end, limit is set, and the end face interval of adjacent metal film forms the misalignment corresponding with the thickening part of described thin film dielectrics layer end.
Further, the width that is positioned at the thickening part of described thin film dielectrics layer end is no more than the width sum on misalignment and Shang Liu limit, limit.
Further, described thickening part is positioned at the middle part of matrix.
Further, between described thin film dielectrics layer and metal electrode, be provided with adhering layer.
Further, described adhering layer is nickel metal layer or titanium coating.
Further, it is trapezoidal gaps that limit is stayed in described centre, the trapezoidal thickening part that described thickening part is corresponding described trapezoidal gaps.
The beneficial effects of the utility model:
Metallic film capacitor of the present utility model, metal electrode comprises matrix and be located at the thickening part on matrix, on adjacent two layers metallized film, the thickening part of metal electrode stays limit corresponding with the centre on another layer of metallized film.Metallized film is reeled after compacting, and thickening part is filled in relative middle Liu Biannei, guarantees the inner tight laminating of the rear capacitor of compacting, reduces the residual of inner air, to reduce the probability that produces air breakdown under high pressure conditions.
These features of the present utility model and advantage will be below embodiment, accompanying drawing in detailed exposure.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is structural representation of the present utility model;
Fig. 2 sets up the structural representation of one deck without the thin film dielectrics layer of metal electrode.
[embodiment]
The utility model provides a kind of metallic film capacitor, comprise at least double-layer metallization film, metallized film comprises thin film dielectrics layer and is disposed on the metal electrode on thin film dielectrics layer, in the middle of being provided with between adjacent metal electrode, stay limit, metal electrode comprises matrix and is located at the thickening part on matrix, in adjacent two layers metallized film, thickening part stays limit corresponding with the centre on another layer of metallized film, metallized film is reeled after compacting, Liu Biannei in the middle of thickening part is embedded in, thickening part is adjacent between adjacent matrix.Compared to existing technology, after flattening, metallized film is not easy laminating between the metal electrode at interval, the utility model arranges thickening part on metal electrode, after metallized film is reeled and is flattened, thickening part can be pressed into relative centre and stay in limit, and metal electrode is fitted tightly mutually, has reduced residual air, and by the deaeration completely of energy after vacuum intruded pitch, effectively get rid of the phenomenon that produces air breakdown under high pressure conditions.
Accompanying drawing below in conjunction with the utility model embodiment is explained and illustrated the technical scheme of the utility model embodiment, but following embodiment is only preferred embodiment of the present utility model, not all.Based on the embodiment in execution mode, those skilled in the art are other embodiment that obtains under the prerequisite of not making creative work, all belongs to protection range of the present utility model.
With reference to figure 1, a kind of metallic film capacitor, comprise pin and capacitor core, capacitor core comprises some layers of metallized film, and metallized film comprises thin film dielectrics layer 1, and the surface of thin film dielectrics layer 1 is provided with the metal electrode 2 being intervally arranged, in the middle of being formed with between adjacent metal electrode 2, stay limit 6, metal electrode 2 comprises matrix 21 and is located at the thickening part 3 on matrix, and in adjacent two layers metallized film, the thickening part 3 of metal electrode stays limit 6 corresponding with the centre on another layer of metallized film.Metallized film is reeled after compacting, and thickening part 3 is embedded in relative centre and stays in limit 6, and therefore thickening part 3 can be adjacent between adjacent matrix 21.
Concrete, thickening part 3 is for being arranged on the thickening of matrix 21 end faces, and thickening part 3 is shaped in the central part of matrix 21.
Wherein the size of thickening part 3 stays the size on limit 6 corresponding consistent with middle.Both are corresponding with Width at height, and thickening part 3 is just in time filled up in limit 6 is stayed in centre.
In the utility model, on thin film dielectrics layer 1, on the opposite face of adjacent matrix 21, be provided with slope, therefore centre stays limit 6 to form trapezoidal gaps, and thickening part 3 is the trapezoidal thickening part corresponding with trapezoidal gaps.Inclined-plane on trapezoidal thickening part coordinates with the Slope Facies of metal electrode, and in metallized film pressing process, trapezoidal thickening part can enter in trapezoidal gaps smoothly.
In order to improve the adhesive power between metal electrode and thin film dielectrics layer in vacuum evaporation, avoid metal electrode Yin Wendu in deposition process or use procedure raise and cause peeling, obscission, the utility model evaporation one deck adhering layer good with its adhesive property as thin as a wafer in advance on thin film dielectrics layer, and then on adhering layer deposit metal electrodes, improve the adhesive property of metal electrode and thin film dielectrics layer with this.Preferably, adhering layer is nickel metal layer or titanium coating.
And thereby thin film dielectrics layer 1 one end protrude from metal electrode on this end 2 and produce Shang Liu limits, limit 4, on thin film dielectrics layer 1 other end, the thickness of the thickening part 31 of metal electrode is greater than the thickening part of all the other metal electrodes on this thin film dielectrics layer.Preferably, the thickness of this thickening part 31 is twices of the thickness of all the other thickening parts.Therefore capacitor is in the time that the vaporific metal spraying material in outside is combined, and overcurrent can be played in this thickening part 31.
Above-mentioned metallized film intersecting, the structure of each metallized film is consistent, and the Shang Liu limit, limit 4 of levels thin film dielectrics layer is positioned at not the same side.Be in adjacent two layers metallized film, on the thickening part 31 that is positioned at thin film dielectrics layer end and another layer film dielectric layer, 4 one end, Shang Liu limit, limit are set and are positioned at the same side, and between double-layer films dielectric layer, form misalignment 5, be positioned at the space that the thickening part 31 of thin film dielectrics layer end forms for filling up misalignment 5 and Shang Liu limit, limit 4, therefore the width of this thickening part 31 need to be less than or equal the width sum on misalignment 5 and Shang Liu limit, limit 4.
Thin film dielectrics layer 1 is polypropylene screen.Polypropylene screen has good electric property, and its loss is little, and insulation resistance is high, and disruptive field intensity is high, is the preferred medium material of capacitor.
Metal electrode 2 is zinc-aluminium metal film.By alloy deposition technology, suppress island growth and mixed type growth, make zinc-aluminium metal film become level and smooth two-dimensional growth, thereby obtain consistency of thickness, surface undulation is little, conducts electricity very well, and punctures the zinc-aluminium metal film that the limit is high.
With reference to figure 2, in said base, the thin film dielectrics layer of another layer also can be set between adjacent two thin film dielectrics layers, on this thin film dielectrics layer, metal electrode is not set.Improve voltage or the small product size of capacitor by increasing thin film dielectrics layer.
The production process of metallic film capacitor comprises the following steps,
Step 1: the coiling of metallized film, be wound into capacitor core after metallized film is stacked, in this process, control following factor: 1, depollution of environment degree control.Coiling chamber uses the Clean room that has temperature, humidity, cleanliness factor control as far as possible, and its temperature is avoided acute variation, the temperature difference≤10 ℃, and humidity≤50%, cleanliness factor >=10000 grade, prevent that metal electrode from oxidation occurring and prevent the pollution of dust particle.2, Winding Tension Controlling.Reel and normally under higher rotating speed, complete, and the material thickness of reeling is generally at several microns, for this control to winding tension seems particularly important, for this reason, in reality is reeled, by fuse hardness test instrument, the film conjugation of testing product in winding process realized the control to tension force.3, flexible glue pressure control.In winding process, adopt flexible glue extruding fuse rete, so that further deaeration.For this reason, must set flexible glue pressure.
Step 2: Vacuum Heat setting process.Capacitor core after coiling must be through heat treated, make the contraction of thin film dielectrics layer in horizontal and vertical generation, coiling is remained in to the Bas Discharged in turn-to-turn gap, eliminate element roll around in the moisture that brings, improve the tightness of capacitor, the stability of capacitance is improved, can also further eliminates coiling stress, contribute to improve electric property.Traditional thermal finalization is antivacuum sizing, and the zinc-aluminium in material is easily oxidation at high temperature, and its adhesive force is weakened, when material is to internal contraction simultaneously, and inner tight outer pine, product outer ring air content is high, but inner excessive compression, field intensity changes.For this reason, the utility model carries out thermal finalization in vacuum tank, and temperature and time control comprised with the next stage: first paragraph, and temperature evenly rises to 110 ℃ from 35 ℃ of temperature, and time control is 2.5 hours; Second segment, 110 ℃ of constant temperature keep 3 hours; The 3rd section, temperature drops to 40 ℃ from 110 ℃ and gets final product outlet, and the time is controlled 2.5 hours.
Step 3: metal spraying technique, metal spraying is requisite operation in capacitor fabrication process, and is important critical process, the quality of metal spraying quality directly affects performance and the life-span of capacitor.In the utility model, based on the operation principle of metal spraying machine, the aspects such as metal spraying distance, metal spraying particle, compressed air are studied, for improving metal spraying quality, need to control the temperature of metal spraying particle to capacitor core one side, control the thickness of metal spraying particle, control metal spraying gas pressure.
Step 4: the technique of energizing, the technique of energizing apply certain voltage to capacitor core, improves the initial electrical property of capacitor.For this reason, the utility model has been taked multisection type to exchange to energize, direct current buffering is energized and instantaneous pressure pulse is energized.
Step 5: welding procedure, metal electrode palpus welding pin, in the time of welding, the one, control welding pressure, do not make gilding layer breakage, pin can not hurt metal electrode and thin film dielectrics layer simultaneously; The 2nd, adopt constant temperature welding, control tin point melt temperature and scolding tin time, prevent that excess Temperature from making material damage; The 3rd, the evenness with mould control product on jig, guarantees welding quality.
Step 6: oil immersion technique, capacitor core carries out before silicone oil dipping, first under high temperature and vacuum condition, the moisture content in silicone oil is repeatedly got rid of, then capacitor core be impregnated in silicone oil, under high negative pressure state, control appropriate time, to get rid of the gas in capacitor core.
Step 7: dosing technology, select the polyurethane of diluent free or epoxy resin as Embedding Material, under vacuum condition, after heating, the capacitor core after dress shell is carried out to embedding, to get rid of capacitor core surrounding air.
Step 8: electric performance test, electric performance test to capacitor mainly comprises: capacity inspection, loss test, alternating voltage test, vdct, DV/DT test, IR test, utmost point shell voltage tester, pulse voltage test, high-frequency loss test, 10ESR test and 11ESL test, also will inspect test by random samples, sampling observation test comprises endurance test, the test of high/low-temperature impact volume change, pressure test, the test of moisture-proof load performance and collision vibration test simultaneously.
By above-described embodiment, the purpose of this utility model is by fully effective having reached.The personage who is familiar with this technology should be understood that the utility model includes but not limited to accompanying drawing and the content of describing in embodiment above.Any modification that does not depart from function and structure principle of the present utility model all will be included in the scope of claims.
Claims (10)
1. a metallic film capacitor, comprise at least double-layer metallization film, described metallized film comprises thin film dielectrics layer and is disposed on the metal electrode on thin film dielectrics layer, in the middle of being provided with between adjacent metal electrode, stay limit, it is characterized in that: described metal electrode comprises matrix and is located at the thickening part on matrix, in adjacent two layers metallized film, thickening part stays limit corresponding with the centre on another layer of metallized film, metallized film is reeled after compacting, Liu Biannei in the middle of described thickening part is embedded in, thickening part is adjacent between adjacent matrix.
2. a kind of metallic film capacitor according to claim 1, is characterized in that: described thin film dielectrics layer one end is provided with Shang Liu limit, limit.
3. a kind of metallic film capacitor according to claim 2, is characterized in that: on the described thin film dielectrics layer other end, the thickness of the thickening part of metal electrode is greater than the thickness of the thickening part of all the other metal electrodes on this thin film dielectrics layer.
4. a kind of metallic film capacitor according to claim 3, is characterized in that: the thickness that is positioned at the thickening part of described thin film dielectrics layer end is the twice of all the other thickening part thickness on this thin film dielectrics layer.
5. according to a kind of metallic film capacitor described in claim 3 or 4, it is characterized in that: in adjacent two layers metallized film, be positioned on the thickening part of described thin film dielectrics layer end and another layer film dielectric layer the homonymy setting of Shang Liubian one end, limit is set, and the end face interval of adjacent metal film forms the misalignment corresponding with the thickening part of described thin film dielectrics layer end.
6. a kind of metallic film capacitor according to claim 5, is characterized in that: the width that is positioned at the thickening part of described thin film dielectrics layer end is no more than the width sum on misalignment and Shang Liu limit, limit.
7. according to a kind of metallic film capacitor described in any one in claim 1 to 4, it is characterized in that: described thickening part is positioned at the middle part of matrix.
8. according to a kind of metallic film capacitor described in any one in claim 1 to 4, it is characterized in that: between described thin film dielectrics layer and metal electrode, be provided with adhering layer.
According to Claim 8 in a kind of metallic film capacitor described in any one, it is characterized in that: described adhering layer is nickel metal layer or titanium coating.
10. according to a kind of metallic film capacitor described in any one in claim 1 to 4, it is characterized in that: it is trapezoidal gaps that limit is stayed in described centre, the trapezoidal thickening part that described thickening part is corresponding described trapezoidal gaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420112399.8U CN203706875U (en) | 2014-03-12 | 2014-03-12 | Metallic film capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420112399.8U CN203706875U (en) | 2014-03-12 | 2014-03-12 | Metallic film capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203706875U true CN203706875U (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420112399.8U Expired - Lifetime CN203706875U (en) | 2014-03-12 | 2014-03-12 | Metallic film capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203706875U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839675A (en) * | 2014-03-12 | 2014-06-04 | 浙江七星电容器有限公司 | Metallic film capacitor |
-
2014
- 2014-03-12 CN CN201420112399.8U patent/CN203706875U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839675A (en) * | 2014-03-12 | 2014-06-04 | 浙江七星电容器有限公司 | Metallic film capacitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 313119 No. 50 Development Avenue, Huaikan Township Industrial District, Changxing County, Huzhou City, Zhejiang Province Patentee after: ZHEJIANG QIXING CAPACITOR Co.,Ltd. Address before: 313119 No. 50 Development Avenue, Huaikan Township Industrial District, Changxing County, Huzhou City, Zhejiang Province Patentee before: Zhejiang Qixing Capacitor Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |