CN115472428A - Metallized film for film capacitor and film capacitor - Google Patents
Metallized film for film capacitor and film capacitor Download PDFInfo
- Publication number
- CN115472428A CN115472428A CN202210966327.9A CN202210966327A CN115472428A CN 115472428 A CN115472428 A CN 115472428A CN 202210966327 A CN202210966327 A CN 202210966327A CN 115472428 A CN115472428 A CN 115472428A
- Authority
- CN
- China
- Prior art keywords
- conductive metal
- metal layer
- film
- insulating layer
- film capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 44
- 239000010408 film Substances 0.000 title claims abstract description 38
- 239000011104 metalized film Substances 0.000 title claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 55
- 239000002184 metal Substances 0.000 claims abstract description 55
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 230000007704 transition Effects 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 101700004678 SLIT3 Proteins 0.000 description 2
- 102100027339 Slit homolog 3 protein Human genes 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- H01G4/005—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
- H01G4/224—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
- H01G4/33—Thin- or thick-film capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention discloses a metallized film for a film capacitor and the film capacitor, comprising an insulating layer and a conductive metal layer plated on one surface of the insulating layer; a remaining edge part is arranged on one length edge of the insulating layer and the conductive metal layer; the electrically conductive metal layer is equipped with equidistant interval distribution's bar seam along its length direction, the bar seam is extended to electrically conductive metal layer inboard by the portion of remaining the limit of insulating layer, with a length limit with electrically conductive metal layer cut apart into a plurality of independent bar unit, and form the series connection portion of each bar unit of series connection between another length limit of electrically conductive metal layer and the inner of bar seam, can prolong the self-healing current path, there is very strong decay effect to the electric current, effectively improve the ability and the resistance to pressure that the metallized film layer bore heavy current, can effectively restrain the release of self-healing energy simultaneously, prevent the emergence of transition self-healing, improve film capacitor's self-healing performance, guarantee the safe handling of condenser.
Description
Technical Field
The invention relates to the technical field of capacitors, in particular to a metalized film for a film capacitor and the film capacitor.
Background
In the design of a power supply part of a new energy automobile, a capacitor is indispensable as an energy storage electrical component, and along with the increase of the use of the new energy automobile, the capacitance requirement of the capacitor is increased. A typical film capacitor is manufactured by overlapping a plastic film with a metal foil such as aluminum as an electrode and winding the metal foil together, but another film capacitor is manufactured by vacuum-depositing a thin metal layer on the plastic film as an electrode, which is called a metallized film.
The metallized film layer of the existing film capacitor core has weaker capability of bearing large current, so that the voltage resistance and the self-healing performance of the capacitor are lower, the safety performance of the capacitor is not high, the service life is limited, and the use and development requirements of a new energy automobile power supply can not be met.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a metalized film for a film capacitor and the film capacitor.
The invention provides a metallized film for a film capacitor, which comprises an insulating layer and a conductive metal layer plated on one surface of the insulating layer;
a remaining edge part is arranged on one length edge of the insulating layer and the conductive metal layer;
the conductive metal layer is provided with strip-shaped seams distributed at equal intervals along the length direction of the conductive metal layer, the strip-shaped seams extend from the edge remaining part of the insulating layer to the inner side of the conductive metal layer so as to divide one length edge of the conductive metal layer into a plurality of independent strip-shaped units, and a series part for connecting each strip-shaped unit in series is formed between the other length edge of the conductive metal layer and the inner end of each strip-shaped seam.
Preferably, the thickness of the stripe-shaped cells of the conductive metal layer is smaller than that of the series portion.
Preferably, the thickness of the portion of the serial portion connected to the stripe cells is gradually reduced from the serial portion to the stripe cells.
Preferably, the material of the strip-shaped units of the conductive metal layer is pure aluminum.
Preferably, the series connection part of the conductive metal layers is made of zinc and aluminum.
Preferably, the insulating layer is made of a PP film.
The invention provides a film capacitor, and a capacitor core of the film capacitor is formed by winding the metalized film.
According to the invention, one surface of the insulating layer is plated with the conductive metal layer, so that the conductive metal layer is combined with the insulating layer, and a remaining edge part is arranged on one length edge of the insulating layer and the conductive metal layer, so as to prevent moisture from invading and enhance the insulating effect; be equipped with the bar seam on electrically conductive metal layer, utilize the bar seam to cut apart into a plurality of independent bar unit with a length limit of electrically conductive metal layer, and form the series connection portion of each bar unit of a series connection between another length limit of electrically conductive metal layer and the inner of bar seam, can prolong the self-healing current path, there is very strong decay effect to the electric current, effectively improve the ability and the resistance to pressure that the metallized film layer bore heavy current, can effectively restrain the release of self-healing energy simultaneously, prevent the emergence of transition self-healing, improve film capacitor's self-healing performance, guarantee the safe handling of condenser.
Drawings
Fig. 1 is a schematic structural diagram of a metallized film for a film capacitor according to the present invention.
Fig. 2 is a cross-sectional view of a metalized film for a film capacitor according to the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 1.
Detailed Description
Referring to fig. 1-3, the metallized film for a film capacitor according to the present invention includes an insulating layer 1 and a conductive metal layer 2 plated on one side of the insulating layer 1. Insulating layer 1 is equipped with a length limit of conducting metal layer 2 and stays limit portion 11, should stay limit portion 11 and indicate to reserve an edge that is not covered by conducting metal layer 2 in insulating layer 1 one side of plating conducting metal layer 2, has laid insulating oil in staying limit portion 11, can effectively prevent the moisture invasion, has still filled the space in staying limit portion 11 simultaneously for it is insulating to obtain strengthening. The conductive metal layer 2 is provided with strip-shaped slits 3 distributed at equal intervals along the length direction of the conductive metal layer, the strip-shaped slits 3 extend from the edge remaining part 11 of the insulating layer 1 to the inner side of the conductive metal layer 2 so as to divide one length edge of the conductive metal layer 2 into a plurality of independent strip-shaped units 21, and a series part 22 for connecting each strip-shaped unit 21 in series is formed between the other length edge of the conductive metal layer 2 and the inner end of the strip-shaped slit 3.
Therefore, according to the invention, the conductive metal layer 2 is plated on one surface of the insulating layer 1, so that the conductive metal layer 2 is combined with the insulating layer 1, and the insulating oil is laid on the edge-remaining part 11, so that the moisture invasion can be effectively prevented, and the insulating strength can be effectively increased; the strip-shaped slits 3 are arranged on the conductive metal layer 2 along the length direction of the conductive metal layer 2 at equal intervals, the conductive metal layer 2 is divided into a plurality of strip-shaped units 21 by the strip-shaped slits 3, the resistance of the conductive metal layer 2 can be effectively increased from the serial connection part 22 to the edge reserving part 11, and the resistance of each strip-shaped unit 21 is approximately equal, so that the uniform distribution of current density is achieved; in addition, when current is transmitted from the serial portion 22 to each of the stripe units 21, the stripe slits 3 allow only the current to be transmitted in parallel in the stripe units 21, and the current transmission between the adjacent stripe units 21 can be effectively prevented.
In a specific embodiment, the thickness of the strip unit 21 of the conductive metal layer 2 is smaller than that of the series part 22, and the thickness of the part of the series part 22 connected with the strip unit 21 is gradually reduced from the direction from the series part 22 to the strip unit 21, so that the current is strongly attenuated, and the generation of instantaneous large current can be effectively prevented, thereby effectively improving the voltage resistance and the dielectric strength of the metalized film.
In this embodiment, the strip units 21 of the conductive metal layer 2 are made of pure aluminum, and the serial connection parts 22 are made of zinc and aluminum; the pure aluminum has the advantages of light weight, strong corrosion resistance and good electric and heat conducting properties, and can effectively improve the high-temperature and high-humidity resistance of the metallized film; the zinc and the aluminum have good conductivity, heat resistance and strong corrosion resistance, and can effectively improve the capacity of the metallized film for bearing large current.
In this embodiment, the insulating layer is made of a PP film; the PP film has the advantages of good corrosion resistance, low water absorption, low loss and high insulativity, and can effectively improve the stability of the metallized film.
The invention also provides a film capacitor, the capacitor core of the film capacitor is formed by winding the metallized film, the film capacitor also comprises other structures in the prior art, and two ends of the capacitor core are connected with electrodes.
In a further embodiment, when the film capacitor is operated, during the current transmission from the series connection part 22 to each strip-shaped unit 21, the operating current passing through the strip-shaped unit 21 is parallel to the strip-shaped slit 3, so that the equivalent series resistance is not increased, and the current resistance of the capacitor can be effectively improved. When the self-healing occurs, the strip-shaped slits 3 of the conductive metal layer 2 at equal intervals along the length direction prevent the current between the adjacent strip-shaped units 21 from being directly transmitted to the breakdown part, only the current is allowed to be transmitted in parallel in the strip-shaped units 21, the self-healing current is collected to the edge of the electrode and then reaches the breakdown point position through the breakdown metalized area, the self-healing current path is prolonged, and the resistance of the conductive metal layer 2 has a strong attenuation effect on the current. And when the self-healing current reaches bar unit 21 and stays the 11 marginal joint positions in limit portion, because of this marginal metal level width is little, form the entrance guard effect, can effectual suppression self-healing energy release, prevent the emergence of excessive self-healing, effectively improve film capacitor's self-healing performance, guarantee the safe handling of condenser.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (7)
1. A metallized film for a film capacitor is characterized by comprising an insulating layer (1) and a conductive metal layer (2) plated on one surface of the insulating layer (1);
a remaining edge part (11) is arranged on one length edge of the insulating layer (1) and the conductive metal layer (2);
the conductive metal layer (2) is provided with strip-shaped seams (3) which are distributed at equal intervals along the length direction of the conductive metal layer, the strip-shaped seams (3) extend from the edge-remaining part (11) of the insulating layer (1) to the inner side of the conductive metal layer (2) so as to divide one length edge of the conductive metal layer (2) into a plurality of independent strip-shaped units (21), and a series part (22) for serially connecting each strip-shaped unit (21) is formed between the other length edge of the conductive metal layer (2) and the inner end of the strip-shaped seam (3).
2. A metallized film for film capacitors as claimed in claim 1, characterized in that the thickness of the strip-shaped cells (21) of the conductive metal layer (2) is smaller than the thickness of the series portion (22).
3. The metallized film for a film capacitor as claimed in claim 2, wherein the thickness of the portion where the series portion (22) is connected to the stripe unit (21) is gradually reduced from the series portion (22) toward the stripe unit (21).
4. The metallized film for a film capacitor as claimed in claim 1, wherein the material of the stripe-shaped cells (21) of the conductive metal layer (2) is pure aluminum.
5. The metallized film for a film capacitor as claimed in claim 1, wherein the series portion (22) of the conductive metal layer (2) is made of zinc and aluminum.
6. The metallized film for a film capacitor as claimed in claim 1, wherein the insulating layer is made of a PP film.
7. A film capacitor comprising the metallized film according to any one of claims 1 to 6, wherein a capacitor core of the film capacitor is formed by winding the metallized film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210966327.9A CN115472428A (en) | 2022-08-12 | 2022-08-12 | Metallized film for film capacitor and film capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210966327.9A CN115472428A (en) | 2022-08-12 | 2022-08-12 | Metallized film for film capacitor and film capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115472428A true CN115472428A (en) | 2022-12-13 |
Family
ID=84367398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210966327.9A Withdrawn CN115472428A (en) | 2022-08-12 | 2022-08-12 | Metallized film for film capacitor and film capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115472428A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006286987A (en) * | 2005-03-31 | 2006-10-19 | Nippon Chemicon Corp | Metallization film capacitor |
| JP2006286988A (en) * | 2005-03-31 | 2006-10-19 | Nippon Chemicon Corp | Metallization film capacitor |
| JP2008263172A (en) * | 2007-03-20 | 2008-10-30 | Toray Ind Inc | Metallized film and capacitor using the same |
| CN103578765A (en) * | 2013-10-15 | 2014-02-12 | 铜陵其利电子材料有限公司 | Metallized film for small-sized capacitor |
| CN206726958U (en) * | 2017-03-16 | 2017-12-08 | 东莞市国灿电子科技有限公司 | Thin film capacitor and its capacitor core |
| CN109768095A (en) * | 2014-05-27 | 2019-05-17 | 太阳能公司 | Stacking formula solar cell module |
| CN111863446A (en) * | 2020-08-16 | 2020-10-30 | 南通新江海动力电子有限公司 | Metallized film for slowing down capacitance capacity loss in humid environment |
-
2022
- 2022-08-12 CN CN202210966327.9A patent/CN115472428A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006286987A (en) * | 2005-03-31 | 2006-10-19 | Nippon Chemicon Corp | Metallization film capacitor |
| JP2006286988A (en) * | 2005-03-31 | 2006-10-19 | Nippon Chemicon Corp | Metallization film capacitor |
| JP2008263172A (en) * | 2007-03-20 | 2008-10-30 | Toray Ind Inc | Metallized film and capacitor using the same |
| CN103578765A (en) * | 2013-10-15 | 2014-02-12 | 铜陵其利电子材料有限公司 | Metallized film for small-sized capacitor |
| CN109768095A (en) * | 2014-05-27 | 2019-05-17 | 太阳能公司 | Stacking formula solar cell module |
| CN206726958U (en) * | 2017-03-16 | 2017-12-08 | 东莞市国灿电子科技有限公司 | Thin film capacitor and its capacitor core |
| CN111863446A (en) * | 2020-08-16 | 2020-10-30 | 南通新江海动力电子有限公司 | Metallized film for slowing down capacitance capacity loss in humid environment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5510458B2 (en) | battery | |
| KR102056729B1 (en) | Capacitor element | |
| US6411496B1 (en) | Electric double layer capacitor and separator therefor | |
| JP6451835B2 (en) | Power storage device | |
| CN115472428A (en) | Metallized film for film capacitor and film capacitor | |
| JP4366930B2 (en) | Metallized film capacitors | |
| CN112117426B (en) | Single battery, power battery pack and vehicle | |
| CN112670083A (en) | Zinc-aluminum thickened metallized polypropylene film | |
| CN203150401U (en) | A solid-state aluminum electrolytic capacitor with a long service life | |
| CN103578765A (en) | Metallized film for small-sized capacitor | |
| CN212182159U (en) | Metallized safety explosion-proof membrane | |
| CN210245320U (en) | High-sheet-resistance metallized film | |
| CN212783690U (en) | Bus bar and battery module | |
| CN2482202Y (en) | Capacitor element | |
| JP4770935B2 (en) | Metallized film capacitors | |
| US10680272B2 (en) | Power storage device | |
| CN201570380U (en) | Capacitor used for ballast of energy-saving lamp | |
| JP5256142B2 (en) | Film capacitor | |
| CN101950669A (en) | Metallized safety diaphragm for wind power generation filter condenser | |
| CN216980362U (en) | Pulse energy storage capacitor | |
| CN216389070U (en) | Corrosion-resistant and high-temperature-resistant metallized film and capacitor thereof | |
| CN221149824U (en) | High energy storage density film capacitor | |
| CN216980359U (en) | Multilayer plate type filter capacitor | |
| CN214672230U (en) | Pulse metallization polypropylene film capacitor | |
| CN108565115A (en) | Sheet resistance gradual change internal parallel metal metallized safety film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20221213 |