CN201069714Y - Pulse capacitor - Google Patents
Pulse capacitor Download PDFInfo
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- CN201069714Y CN201069714Y CNU2007201558326U CN200720155832U CN201069714Y CN 201069714 Y CN201069714 Y CN 201069714Y CN U2007201558326 U CNU2007201558326 U CN U2007201558326U CN 200720155832 U CN200720155832 U CN 200720155832U CN 201069714 Y CN201069714 Y CN 201069714Y
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- film
- capacitor
- thin film
- metallized
- plastic
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Abstract
The utility model relates to a pulse capacitor and aims to solve the problem with prior art of low energy-storing density (specific energy). The pulse capacitor includes at least one metallized thin film capacitor core which is formed by winding a first metallized thin film and a second metallized thin film, wherein the first metallized thin film is composed of a first plastic thin film and a metal strip film evaporation-plated on the surface of the plastic thin film, and the metal film is symmetrically arranged along the width of the first plastic thin film while leaving margins on the two sides in a width of 4-6mm; the second metallized thin film includes a second plastic thin film and two paralleled metal strip films evaporation-plated on the surface of the plastic thin film, and the two metal strip films are symmetrically arranged along the width of the second thin film while leaving a margin in a width of 5-7mm at the center; and the square resistance of the metal films evaporation-plated on the two metallized thin films is 25 Omega/square plus or minus 40%. The pulse capacitor with the structure can effectively reduce the volume of the capacitor and increase the density of energy storage of the capacitor.
Description
Technical field
The utility model relates to a kind of capacitor, the pulse capacitor of particularly a kind of high energy storage density (specific energy).
Background technology
(high pressure) pulse capacitor is widely used in places such as nuclear fusion, electromagnetism accelerator, pulse laser power supply, impulse current and impulse voltage generators, is mainly used in military complete machine, and energy storehouse energy resource system is as main energy-storage travelling wave tube.Along with the client is more and more higher to the demand of complete machine miniaturization, the energy storage density of paired pulses capacitor requires also more and more higher, and the client who has has required energy storage density should reach 0.5-0.6J/cm
3And at present, (high pressure) pulse capacitor of domestic production divides two kinds, a kind of oil immersed type, and volume is big, and energy storage density is usually at 0.05-0.1J/cm
3About; Another kind of is the metallization formula, and its volume is less with respect to oil immersed type, and its energy storage density (specific energy) is usually at 0.2-0.3J/cm
3Therefore utilize existing product structure can't satisfy client's demand far away.
The utility model content
For addressing the above problem, the utility model provides a kind of pulse capacitor of high energy storage density.
For achieving the above object, pulse capacitor of the present utility model comprises at least one metallic film capacitor fuse, and described capacitor body is reeled by first metallized film and second metallized film and formed; Wherein, first metallized film is made up of a strip metal film of first plastic film and this plastic film surface evaporation, and described metal film is arranged along first plastic film width symmetry, and the limit is stayed in both sides, stays the limit amount to be the 4-6 millimeter; Second metallized film comprises two metal films compositions that are parallel to each other of second plastic film and this plastic film surface evaporation, and described two strip metal films are arranged along second thin-film width symmetry, and the limit is stayed in the centre, stays the limit amount to be the 5-7 millimeter; The resistance of the side of the metal film of evaporation is 25 Ω/ ± 40% on first metallized film and second metallized film.
Further, the second above-mentioned metallized film is the heavy-edge metallized film of metal film, and wherein side's resistance of edge thickening place is 1-3 Ω/ ± 40%, and side's resistance at place, middle effective coverage is 25 Ω/ ± 40%.
Adopt the said structure pulse capacitor, can reduce the volume of capacitor effectively, increase the energy storage density of capacitor.
Description of drawings
Fig. 1 is the local enlarged diagram of the utility model pulse capacitor fuse.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
According to the energy storage density formula:
Energy storage density=energy/volume; Wherein, energy=1/2CU
2
We can know that the capacity of unit volume inner capacitor is big more, proof voltage is high more, and then correspondingly its energy storage density is also big more; Under the situation that voltage and capacitance are determined, the volume of capacitor is more little, and then correspondingly its energy storage density is also big more.According to above-mentioned principle, we improve from following several aspects paired pulses capacitor.
The utility model pulse capacitor comprises at least one metallic film capacitor fuse; Consider that with the metallic film capacitor fuse be owing to metal film in the metallized film is thinner, help reducing the volume of capacitor, help improving the specific energy of capacitor.
As shown in Figure 1, described capacitor body is reeled by first metallized film 2 and second metallized film 3 and is formed; Wherein, first metallized film 2 is made up of a strip metal film 22 of first plastic film 21 and this plastic film surface evaporation, and described metal film is arranged along first plastic film width symmetry, and limit 23 is stayed in both sides, stays the limit amount to be the 4-6 millimeter; Second metallized film 3 comprises two metal films that are parallel to each other, 32 compositions of second plastic film 31 and this plastic film surface evaporation, and described two strip metal films are arranged along second thin-film width symmetry, and limit 33 is stayed in the centre, stays the limit amount to be the 5-7 millimeter; After adopting said structure, connect, can in limited unit are, improve field intensity, improve withstand voltage, reduce the volume of single capacitor body, help improving the energy storage density of capacitor inner formation of capacitor body.
The limit amount of staying of two above-mentioned metallized films draws through actual test, in such scope, in the proof voltage that has guaranteed capacitor body, also improved the effective area of metallized film as much as possible, thereby helped further improving the energy storage density of capacitor.
Above-mentioned first metallized film and second metallized film should be selected the high square resistance metallized film for use, can the side's of selecting for use resistance be 25 Ω/ ± 40% for example, help improving the energy stored of capacitor like this, can further improve the energy storage density of capacitor.
The quantity of capacitor body is relevant with the nominal capacity and the rated voltage of capacitor in the above-mentioned capacitor, nominal capacity and rated voltage are high more, the quantity of capacitor body then many more (promptly adopting the mode of series and parallel to improve the voltage and the capacity of whole capacitor device with a plurality of capacitors).The nominal capacity of capacitor is big more, and rated voltage is high more, and then the energy storage density of capacitor is relatively also big more.
The diameter of above-mentioned capacitor body can design as required voluntarily.Through actual test, the diameter of above-mentioned capacitor body is approximately the 45-60 millimeter.If diameter is big again, difficulty of processing increases, and is difficult for heat radiation, and failure probability increases (reason is that the electric weakness of capacitor film increases); If diameter is littler, then the dead volume of corresponding capacitor can increase, and the energy storage density of corresponding capacitor also can decrease.
Above-mentioned plastic film generally can be the plastic film of various materials, as terylene, polypropylene etc., best polypropylene film, the thickness of this film is preferably 5-8 μ m, through actual test, the thickness of plastic film helps under the situation that guarantees proof voltage in such scope, reduce defect rate, improve the energy storage density of capacitor; Above-mentioned side's resistance is that first metallized film and the second metallized film market of 25 Ω/ ± 40% is on sale, thicken the zinc-aluminium metalized film as the safe intermediately remained border edge of taking (steiner) to produce of German History: STEINERFILM P-ZnR, double-edge zinc-aluminium metalized film: STEINERFILM P-Zn etc.
Claims (5)
1. a pulse capacitor comprises at least one metallic film capacitor fuse, it is characterized in that: described capacitor body is reeled by first metallized film and second metallized film and is formed; Wherein,
First metallized film is made up of a strip metal film of first plastic film and this plastic film surface evaporation, and described metal film is arranged along first plastic film width symmetry, and the limit is stayed in both sides, stays the limit amount to be the 4-6 millimeter;
Second metallized film comprises two metal films compositions that are parallel to each other of second plastic film and this plastic film surface evaporation, and described two strip metal films are arranged along second plastic film width symmetry, and the limit is stayed in the centre, stays the limit amount to be the 5-7 millimeter;
The resistance of the side of the metal film of evaporation is 25 Ω/ ± 40% on first metallized film and second metallized film.
2. pulse capacitor as claimed in claim 1, it is characterized in that: described second metallized film is the heavy-edge metallized film of metal film, wherein side's resistance of edge thickening place is 1-3 Ω/ ± 40%, and side's resistance at place, middle effective coverage is 25 Ω/ ± 40%.
3. pulse capacitor as claimed in claim 1 or 2 is characterized in that: the diameter of described capacitor body is the 45-60 millimeter.
4. pulse capacitor as claimed in claim 1 or 2 is characterized in that: described plastic film is a polypropylene film, and its thickness is 5-8 μ m.
5. pulse capacitor as claimed in claim 3 is characterized in that: described plastic film is a polypropylene film, and its thickness is 5-8 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201558326U CN201069714Y (en) | 2007-07-02 | 2007-07-02 | Pulse capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201558326U CN201069714Y (en) | 2007-07-02 | 2007-07-02 | Pulse capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201069714Y true CN201069714Y (en) | 2008-06-04 |
Family
ID=39491103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201558326U Expired - Lifetime CN201069714Y (en) | 2007-07-02 | 2007-07-02 | Pulse capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201069714Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108520825A (en) * | 2018-04-02 | 2018-09-11 | 华中科技大学 | A kind of high temperature pulse capacitor and its manufacturing method for underground special power supply |
| CN108922777A (en) * | 2018-06-22 | 2018-11-30 | 西北核技术研究所 | A kind of plate low inductance impulse capacitor of high pressure megavolt grade |
| CN109216023A (en) * | 2018-08-21 | 2019-01-15 | 安徽飞达电气科技有限公司 | A kind of high-voltage mutual inductor electricity container metallized film materials |
| CN112271081A (en) * | 2015-06-26 | 2021-01-26 | 电容器科学股份公司 | Winding type capacitor |
-
2007
- 2007-07-02 CN CNU2007201558326U patent/CN201069714Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271081A (en) * | 2015-06-26 | 2021-01-26 | 电容器科学股份公司 | Winding type capacitor |
| CN108520825A (en) * | 2018-04-02 | 2018-09-11 | 华中科技大学 | A kind of high temperature pulse capacitor and its manufacturing method for underground special power supply |
| CN108922777A (en) * | 2018-06-22 | 2018-11-30 | 西北核技术研究所 | A kind of plate low inductance impulse capacitor of high pressure megavolt grade |
| CN109216023A (en) * | 2018-08-21 | 2019-01-15 | 安徽飞达电气科技有限公司 | A kind of high-voltage mutual inductor electricity container metallized film materials |
| CN109216023B (en) * | 2018-08-21 | 2020-06-30 | 安徽飞达电气科技有限公司 | Capacitor metallized film material for high-voltage transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 100041 Beijing, Badachu hi tech park, West Wells Road, building 1595, room 3, No., room 3 Patentee after: Beijing Kejiaxin capacitor Research Institute Co. Ltd Address before: 100041 Beijing city Shijingshan District Fushilu No. 181 Patentee before: Beijing Kejiaxin Research Institute of Capacitor |
|
| DD01 | Delivery of document by public notice |
Addressee: Beijing Kejiaxin capacitor Research Institute Co. Ltd Document name: Notification of Passing Examination on Formalities |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080604 |