CN210535509U - Capacitor film and capacitor - Google Patents
Capacitor film and capacitor Download PDFInfo
- Publication number
- CN210535509U CN210535509U CN201921750850.8U CN201921750850U CN210535509U CN 210535509 U CN210535509 U CN 210535509U CN 201921750850 U CN201921750850 U CN 201921750850U CN 210535509 U CN210535509 U CN 210535509U
- Authority
- CN
- China
- Prior art keywords
- capacitor
- base layer
- film
- thickness
- film base
- 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.)
- Active
Links
Images
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The utility model discloses a capacitor film and a capacitor, wherein the capacitor film comprises a film base layer and a metal coating, and the metal coating is arranged on the surface of the film base layer; the thickness of the metal coating is gradually changed from the middle of the film base layer to the two sides of the film base layer. A capacitor comprises an electrode core, wherein the electrode core is formed by stacking and rolling two layers of capacitor films; the capacitor film comprises a metal coating and a film base layer, wherein the metal coating is arranged on the surface of the film base layer; the thickness of the metal coating of one capacitor film is gradually reduced from the middle part of the film base layer to the two sides of the film base layer; the thickness of the metal coating of the other capacitor film is gradually increased from the middle part of the film base layer to the two sides of the film base layer. The utility model discloses can improve the overcurrent ability and the thermal diffusivity of condenser.
Description
Technical Field
The utility model relates to a condenser technical field especially relates to a capacitor film and condenser.
Background
At present, the film capacitor is mainly formed by winding an electrode core through a film, and a metal plating layer is arranged on the film for conducting electricity. The existing film for the capacitor can be provided with intervals on an electroplated layer so as to ensure creepage distance, and the interval film is easy to have intervals when being rolled up, so that external water vapor enters to oxidize an electrode; meanwhile, the self-healing performance of the capacitor is poor due to the obvious thickness difference. The other films are often formed by thickening the plating layer on the side of the film substrate to prevent the intrusion of external moisture and air during winding, and such a structure results in poor heat dissipation capability and overcurrent capability of the capacitor.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, an object of the present invention is to provide a capacitor film, the thickness of the metal plating layer is gradually changed, so as to improve the over-current capability and heat dissipation of the capacitor.
A second object of the present invention is to provide a capacitor, wherein the electrode core is formed by rolling up the capacitor film with complementary thickness, and the heat dissipation and over-current capability are both better, and the self-healing property of the capacitor can be ensured.
The purpose of the utility model is realized by adopting the following technical scheme:
a capacitor film comprises a film base layer and a metal coating, wherein the metal coating is arranged on the surface of the film base layer; the thickness of the metal coating is gradually changed from the middle of the film base layer to the two sides of the film base layer.
Further, the thickness of the metal coating is gradually reduced from the middle of the film base layer to two sides of the film base layer; and edge blank areas are arranged on two sides of the film base layer.
Further, the width of the margin area is 2.5mm-3 mm.
Further, the thickness of the metal coating is gradually increased from the middle of the film base layer to two sides of the film base layer; the metal coating comprises an interval area and a thickness gradient area; the spacing area is arranged in the middle of the metal coating and divides the metal coating into two thickness gradually-changing areas; the thickness of the thickness gradual change area is gradually increased from the middle part to the outer side.
Further, the width of the spacer is 4mm-6 mm.
The second purpose of the utility model is realized by adopting the following technical scheme:
a capacitor comprises an electrode core, wherein the electrode core is formed by stacking and rolling two layers of capacitor films; the capacitor film comprises a metal coating and a film base layer, wherein the metal coating is arranged on the surface of the film base layer; the thickness of the metal coating of one capacitor film is gradually reduced from the middle part of the film base layer to the two sides of the film base layer; the thickness of the metal coating of the other capacitor film is gradually increased from the middle part of the film base layer to the two sides of the film base layer.
Furthermore, both sides of the film base layer of one of the capacitor films are provided with margin areas.
Further, the width of the margin area is 2.5mm-3 mm.
Further, the metal plating layer of the other capacitor film comprises a spacer region and a thickness gradient region; the spacing area is arranged in the middle of the metal coating and divides the metal coating into two thickness gradually-changing areas; the thickness of the thickness gradual change area is gradually increased from the middle part to the outer side.
Further, the width of the spacer is 4mm-6 mm.
Compared with the prior art, the beneficial effects of the utility model reside in that: the thickness of the metal coating film on the film base layer is gradually changed from the middle of the film base layer to the two sides of the film base layer, the thickness difference at each position is gradually changed, the self-healing property can be guaranteed, and the over-current capacity and the heat dissipation performance of the capacitor are guaranteed.
In addition, the electrode core is formed by winding a capacitor film with complementary thickness, so that the heat dissipation and overcurrent capacity are good, and the self-healing property of the capacitor can be ensured.
Drawings
Fig. 1 is a schematic structural view of a capacitor film according to the present invention;
FIG. 2 is a cross-sectional view of the capacitor film of FIG. 1;
fig. 3 is another schematic structural diagram of the capacitor film of the present invention;
FIG. 4 is a cross-sectional view of the capacitor film of FIG. 3;
fig. 5 is a schematic structural diagram of the capacitor of the present invention.
In the figure: 10. a film base layer; 11. reserving an edge blank area; 20. a metal plating layer; 21. a spacer region; 22. a thickness gradient region; 100. an electrode core.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments:
a capacitor film as shown in fig. 1-4, comprising a film base layer 10 and a metal plating layer 20, wherein the metal plating layer 20 is disposed on the surface of the film base layer 10; the thickness of the metal coating 20 gradually changes from the middle of the film base layer 10 to the two sides of the film base layer 10, and the thickness difference gradually changes at each position, so that the self-healing property can be ensured, and the overcurrent capacity and the heat dissipation performance of the capacitor can be ensured.
Further, referring to fig. 1, the thickness of the metal plating layer 20 gradually decreases from the middle of the film base 10 to both sides of the film base 10, and both sides of the film base 10 are provided with margin areas 11, where the margin areas 11 are not covered by the metal plating layer 20. So, middle part metallic coating 20 is thicker, extends to both sides gradually, and metallic coating 20 is thin gradually, shows that the square resistance is that both sides square resistance is big, and middle square resistance is little, has better self-healing nature when can guarantee to be applied to electrode core 100 on the one hand, and on the other hand, the blank space 11 that has also can guarantee creepage distance.
Further, the width of the margin area 11 is 2.5mm to 3 mm.
Further, referring to fig. 3 and 4, in this structure, the thickness of the metal plating layer 20 gradually increases from the middle of the film base layer 10 to both sides of the film base layer 10, and the metal plating layer 20 includes a spacing region 21 and a thickness gradually-changing region 22; the spacing area 21 is arranged in the middle of the metal coating 20 and divides the metal coating 20 into two thickness gradient areas 22; the thickness of the thickness gradual change region 22 is gradually increased from the middle to the outer side, specifically, the thickness of the metal coating layer of the spacing region 21 is 0mm, namely the film base layer 10 at the position is not covered by the metal coating layer 20, the metal coating layers 20 at two sides become thinner towards the middle of the film base layer 10, the sheet resistance is small at two sides, the middle is gradually increased, and the oxidation resistance is better.
Further, the width of the spacer 21 is 4mm to 6 mm.
Regardless of the above-described method of gradually changing the thickness of the metal plating layer 20, the thickness of the metal plating layer 20 is gradually changed from thick to thin or from thin to thick, and has the taught thermal conductivity and self-healing property.
Referring to fig. 1 to 5, the present embodiment further provides a capacitor, which includes an electrode core 100, wherein the electrode core 100 is formed by stacking and rolling two layers of capacitor films; the capacitor film comprises a metal coating layer 20 and a film base layer 10, wherein the metal coating layer 20 is arranged on the surface of the film base layer 10; the thickness of the metal plating layer 20 of one of the capacitor films is gradually reduced from the middle of the film base layer 10 to both sides of the film base layer 10; the thickness of the metal plating layer 20 of the other capacitor film is gradually increased from the middle of the film base layer 10 to both sides of the film base layer 10. On the basis of the structure, the metal plating layer 20 of one resistor film is thick in the middle and thin on two sides, and the metal plating layer 20 of the other resistor film is thin in the middle and thick on two sides, so that the metal plating layers are complementary in the thickness direction, and thus, in the area where the sheet resistance of one resistor film is low, the sheet resistances of the other resistor films are high and complementary with each other, and the self-healing property of the metalized film capacitor is ensured. Meanwhile, the thickness difference can be compensated, and the antioxidant effect is better. The thickness of the metal plating layer 20 is gradually changed, so that the heat conductivity is better, and the overcurrent capacity of the film capacitor can be improved.
Furthermore, the film base layer 10 of one of the capacitor films is provided with margin areas 11 on both sides, and the margin areas 11 are not covered with the metal plating layer 20. So, middle part metallic coating 20 is thicker, extends to both sides gradually, and metallic coating 20 is thin gradually, shows that the square resistance is that both sides square resistance is big, and middle square resistance is little, has better self-healing nature when can guarantee to be applied to electrode core 100 on the one hand, and on the other hand, the blank space 11 that has also can guarantee creepage distance.
Further, the width of the margin area 11 is 2.5mm to 3 mm.
Further, the metal plating layer 20 of the other capacitor film includes a spacer region 21 and a thickness gradation region 22; the spacing area 21 is arranged in the middle of the metal coating 20 and divides the metal coating 20 into two thickness gradient areas 22; the thickness of the thickness gradually varying region 22 gradually increases from the middle to the outer side. The thickness of the metal plating layer 20 is gradually increased from the middle of the film base layer 10 to both sides of the film base layer 10, and the metal plating layer 20 includes a spacer region 21 and a thickness gradient region 22; the spacing area 21 is arranged in the middle of the metal coating 20 and divides the metal coating 20 into two thickness gradient areas 22; the thickness of the thickness gradual change region 22 is gradually increased from the middle to the outer side, specifically, the thickness of the metal coating layer of the spacing region 21 is 0mm, namely the film base layer 10 at the position is not covered by the metal coating layer 20, the metal coating layers 20 at two sides become thinner towards the middle of the film base layer 10, the sheet resistance is small at two sides, the middle is gradually increased, and the oxidation resistance is better.
On the basis of the structure, the interval area 21 of the metal coating 20 of the capacitor film can be made up by the middle thickness of the metal coating 20 of another capacitor film, and the thicker part of the edge of the capacitor thickness gradient area 22 can be made up by the margin area 11 on the film base layer 10 of another capacitor film, so that the creepage distance is ensured, meanwhile, the immersion of external water vapor and air can be effectively blocked, and the failure caused by the rapid oxidation of the internal metal coating 20 is prevented.
Further, the width of the spacer 21 is 4mm to 6 mm.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.
Claims (10)
1. The capacitor film is characterized by comprising a film base layer and a metal coating, wherein the metal coating is arranged on the surface of the film base layer; the thickness of the metal coating is gradually changed from the middle of the film base layer to the two sides of the film base layer.
2. The capacitor film as claimed in claim 1, wherein the thickness of the metal plating layer is gradually decreased from the middle of the film base layer to both sides of the film base layer; and edge blank areas are arranged on two sides of the film base layer.
3. The capacitor film as claimed in claim 2, wherein the width of the margin area is 2.5mm to 3 mm.
4. The capacitor film as claimed in claim 1, wherein the thickness of the metal plating layer is gradually increased from the middle of the film base layer to both sides of the film base layer; the metal coating comprises an interval area and a thickness gradient area; the spacing area is arranged in the middle of the metal coating and divides the metal coating into two thickness gradually-changing areas; the thickness of the thickness gradual change area is gradually increased from the middle part to the outer side.
5. The capacitor film of claim 4, wherein the spacer has a width of 4mm to 6 mm.
6. A capacitor comprises an electrode core, wherein the electrode core is formed by stacking and rolling two layers of capacitor films; the capacitor film is characterized by comprising a metal coating and a film base layer, wherein the metal coating is arranged on the surface of the film base layer; the thickness of the metal coating of one capacitor film is gradually reduced from the middle part of the film base layer to the two sides of the film base layer; the thickness of the metal coating of the other capacitor film is gradually increased from the middle part of the film base layer to the two sides of the film base layer.
7. The capacitor of claim 6 wherein said one of said capacitor films has margin regions on both sides of said film substrate.
8. The capacitor of claim 7 wherein said margin area has a width of 2.5mm to 3 mm.
9. The capacitor of claim 6 wherein the metallization of the other capacitor film includes a spacer region and a thickness graded region; the spacing area is arranged in the middle of the metal coating and divides the metal coating into two thickness gradually-changing areas; the thickness of the thickness gradual change area is gradually increased from the middle part to the outer side.
10. The capacitor of claim 9 wherein the spacer has a width of 4mm to 6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921750850.8U CN210535509U (en) | 2019-10-17 | 2019-10-17 | Capacitor film and capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921750850.8U CN210535509U (en) | 2019-10-17 | 2019-10-17 | Capacitor film and capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210535509U true CN210535509U (en) | 2020-05-15 |
Family
ID=70607891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921750850.8U Active CN210535509U (en) | 2019-10-17 | 2019-10-17 | Capacitor film and capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210535509U (en) |
-
2019
- 2019-10-17 CN CN201921750850.8U patent/CN210535509U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210535509U (en) | Capacitor film and capacitor | |
| CN202025647U (en) | Oil type oxidation barrier film structure for metalized capacitors | |
| JP2021174970A (en) | Multilayer ceramic capacitor and mounting structure of multilayer ceramic capacitor | |
| JP6393026B2 (en) | Metallized film capacitors | |
| CN103456492B (en) | High-sheet-resistancaluminum aluminum membrane | |
| CN101295581A (en) | All-aluminum thickened thin film for metalized capacitor | |
| JP2009277830A (en) | Metallized film capacitor | |
| CN211479870U (en) | Metallized safety film and metallized safety film capacitor | |
| CN205016384U (en) | Metallized film of metallization electrode layer thickness piggyback control | |
| CN202025648U (en) | Super-high sheet resistance metalized film | |
| CN111863446B (en) | Metallized film for slowing down capacitance capacity loss in humid environment | |
| JP2009188001A (en) | Metallized film, and metallized film capacitor | |
| CN101295584A (en) | Aluminum thickened thin film for metalized capacitor | |
| US20090225491A1 (en) | Metallized film capacitor | |
| JP2013153115A (en) | Metalization film capacitor | |
| US9111691B2 (en) | Ceramic electronic component | |
| JP4876649B2 (en) | DC metallized film capacitor | |
| CN102496455A (en) | Middle margin single-layer metallized film capacitor | |
| CN201765958U (en) | Metalized membrane with low sheet resistance | |
| JP2010199479A (en) | Metalized film capacitor | |
| CN206331919U (en) | Metallization film capacitor fuse | |
| CN216597295U (en) | Thin film capacitor | |
| CN213400886U (en) | Capacitor is with interior limit metallized film that leaves | |
| CN210897000U (en) | Double-sided misalignment metallized film | |
| CN210403518U (en) | Metallized film with wavy edge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |