CN213635719U - Double-layer metal spraying capacitor - Google Patents
Double-layer metal spraying capacitor Download PDFInfo
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- CN213635719U CN213635719U CN202022773496.XU CN202022773496U CN213635719U CN 213635719 U CN213635719 U CN 213635719U CN 202022773496 U CN202022773496 U CN 202022773496U CN 213635719 U CN213635719 U CN 213635719U
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Abstract
The utility model provides a double-deck metal spraying condenser, include: the metal spraying device comprises two metal spraying layers which are oppositely arranged, wherein each metal spraying layer comprises a first metal spraying layer and a second metal spraying layer, one side surface of each first metal spraying layer is attached to the corresponding second metal spraying layer, and a plurality of bulges are arranged on the other side surface of each first metal spraying layer; the diameter of the second gold spraying layer gold spraying particles is larger than that of the first gold spraying layer gold spraying particles; at least three layers of cores, the cores are vertically arranged between the two metal spraying layers, any two adjacent layers of cores are arranged in a staggered mode along the parallel direction, and therefore the protrusions are embedded between any two layers of cores at intervals. The utility model provides a condenser metal spraying face easy oxidation and the problem that the metal spraying face drops easily.
Description
Technical Field
The utility model relates to a condenser technical field particularly, relates to a double-deck metal spraying condenser.
Background
A capacitor is generally referred to simply as a capacitor, and as the name implies, is an "electrically charged capacitor," a device that holds an electrical charge. The capacitor is one of electronic elements widely used in electronic equipment, and is widely applied to aspects of blocking AC, coupling, bypassing, filtering, tuning loop, energy conversion, control and the like in a circuit.
The metallized film capacitor has many excellent characteristics, so that it is a capacitor with excellent performance, and it has no polarity, very high insulation resistance, excellent frequency characteristic, and small dielectric loss, and is more and more widely used. A typical film capacitor is manufactured by winding a metal foil as an electrode and a plastic film together after they are stacked. After the capacitor is rolled, the rolled end face needs to be subjected to metal spraying treatment, so that the inner ring winding layer and the outer ring winding layer of the metallized film form an integral metal electrode surface.
The existing metallized film is produced by the capacitor made of the material, the metal spraying surface is easy to oxidize, the blackened condition is presented, the welding is not facilitated, the metal spraying surface is smooth, the adhesion of the metal spraying layer is small, the welding strength is weak, the metal spraying layer is easy to fall off, and the quality of the capacitor is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that the metal spraying surface of the capacitor is easy to oxidize and the metal spraying surface is easy to drop.
In order to solve the above problem, the utility model provides a double-deck metal spraying capacitor, include:
the metal spraying device comprises two metal spraying layers which are oppositely arranged, wherein each metal spraying layer comprises a first metal spraying layer and a second metal spraying layer, one side surface of each first metal spraying layer is attached to the corresponding second metal spraying layer, and a plurality of bulges are arranged on the other side surface of each first metal spraying layer; the diameter of the second gold spraying layer gold spraying particles is larger than that of the first gold spraying layer gold spraying particles;
at least three layers of cores, the cores are vertically arranged between the two metal spraying layers, any two adjacent layers of cores are arranged in a staggered mode along the parallel direction, and therefore the protrusions are embedded between any two layers of cores at intervals.
Preferably, the first gold-spraying layer is a pure zinc gold-spraying layer, and the second gold-spraying layer is a zinc-tin alloy gold-spraying layer.
Preferably, the diameter of the gold spraying particles of the first gold spraying layer is 1/3-1/2 of the thickness of the core, and the diameter of the gold spraying particles of the second gold spraying layer is 1.4-2 times of the diameter of the gold spraying particles of the first gold spraying layer.
Preferably, the total thickness of the first gold-sprayed layer and the second gold-sprayed layer is 0.5-0.9 mm.
Preferably, the core includes insulating film and sets up metallized film cladding material on the insulating film, the length of metallized film cladding material is shorter than insulating film's length, just metallized film cladding material one end with the insulating film parallel and level, metallized film cladding material with the thickness of insulating film parallel and level one end is greater than the thickness of the other end, the thicker one end of metallized film cladding material thickness with first metal-spraying layer is connected, and makes the arch inlay establish the upper surface of metallized film cladding material with looks spaced between insulating film's the lower surface.
Preferably, the surface of the metallized film coating connected with the protrusion is wavy.
Preferably, the double-layer metal-sprayed capacitor further comprises terminals, and at least two terminals are arranged on one side of the second metal-sprayed layer, which is far away from the protrusion.
Preferably, the terminal is semicircular, and the diameter of the terminal is larger than that of the second gold-sprayed layer gold-sprayed particles.
Preferably, the terminals are pure tin terminals.
Preferably, a copper wire is provided in the terminal, and the copper wire is adapted to be connected to the outside.
Compared with the prior art, the utility model provides a double-deck metal spraying capacitor has following advantage:
the utility model provides a double-deck metal spraying capacitor, through set up a plurality of archs in the first metal spraying layer one side of keeping away from the second metal spraying layer, and through setting up arbitrary adjacent two-layer core in a staggered manner, so that the arch inlays and establishes between arbitrary spaced two-layer core, has increased the area of contact between first metal spraying layer and the core, has increased the adhesive force of first metal spraying layer, has reduced the risk that the metal spraying layer easily drops; through set up the great second of metal spraying particle diameter on the less first metal spraying layer of metal spraying particle diameter, make the metal spraying particle of major diameter adhere to the metal spraying particle surface of minor diameter, the surperficial roughness of metal spraying layer has been increased, area of contact when having increased the welding, thereby be favorable to improving welding strength, and set up the different metal spraying layer of two-layer metal spraying particle diameter on the metal spraying surface of core, also can prevent the oxidation of metal spraying surface, the problem that the metal spraying surface is easily oxidized and drops easily has been solved.
Drawings
Fig. 1 is a schematic view of the overall structure of a double-layer metal-sprayed capacitor according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a plated layer of a metallized film according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a double-layer metal-sprayed capacitor with terminals according to an embodiment of the present invention.
Description of reference numerals:
1-a core; 2-spraying a gold layer; 3-a terminal; 11-an insulating film; 12-metallized film coating; 21-a first gold-sprayed layer; 22-second gold-sprayed layer; 31-copper wire; 211-bump.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Fig. 1 is the overall structure schematic diagram of the double-layer metal spraying capacitor of the present invention. As shown in fig. 1, the utility model provides a double-deck metal spraying condenser includes:
the two gold spraying layers 2 are oppositely arranged, each gold spraying layer 2 comprises a first gold spraying layer 21 and a second gold spraying layer 22, one side surface of each first gold spraying layer 21 is attached to the corresponding second gold spraying layer 22, and a plurality of bulges 211 are arranged on the other side surface of each first gold spraying layer 21; the diameter of the gold spraying particles of the second gold spraying layer 22 is larger than that of the gold spraying particles of the first gold spraying layer 21;
at least three layers of cores 1, wherein the cores 1 are vertically arranged between two metal spraying layers 2, and any two adjacent layers of cores 1 are arranged in a staggered mode along the parallel direction, so that the protrusions 211 are embedded between any two layers of cores 1 which are spaced at any intervals.
In the embodiment, the plurality of protrusions are arranged on the side, away from the second gold-spraying layer 22, of the first gold-spraying layer 21, and any two adjacent layers of cores 1 are arranged in a staggered manner, so that the protrusions 211 are embedded between any two layers of cores 1 at intervals, the contact area between the first gold-spraying layer 21 and the cores 1 is increased, the adhesive force of the first gold-spraying layer 21 is increased, and the risk that the gold-spraying layer is easy to fall off is reduced; through set up the great second of metal spraying particle diameter and spout gold layer 22 on the less first metal spraying layer 21 of metal spraying particle diameter, make the metal spraying particle of major diameter adhere to the metal spraying particle surface of minor diameter, increased the roughness on metal spraying layer 2 surface, area of contact when having increased the welding to be favorable to improving welding strength, and set up the different metal spraying layer 2 of two-layer metal spraying particle diameter on the metal spraying surface of core 1, also can prevent the oxidation of metal spraying surface.
On the basis of the above embodiment, as a preferred embodiment, the first gold-spraying layer 21 is a pure zinc gold-spraying layer, the second gold-spraying layer 22 is a zinc-tin alloy gold-spraying layer, the protrusion 211 is made of the same material as the first gold-spraying layer 21, that is, the protrusion 211 is also made of pure zinc, and the first gold-spraying layer and the second gold-spraying layer are made of different materials, so that the conductivity and the solderability of the capacitor are improved, and the quality of the capacitor is also improved.
For convenience of description, the thickness of the core 1 is abbreviated as D, the diameter of the gold spraying particles of the first gold spraying layer 21 is abbreviated as D1, the diameter of the gold spraying particles of the second gold spraying layer 22 is abbreviated as D2, and in order to ensure that the gold spraying particles of the first gold spraying layer 21 can be embedded between two layers of cores 1 which are spaced apart from each other and increase the adhesive force of the gold spraying particles of the first gold spraying layer, 1/3D is more than D1 and less than 1/2D; in order to ensure better welding strength of the second gold-sprayed layer 22 and avoid oxidation of the first gold-sprayed layer 21, 1.4D1 < D2 < 2D 1. Those skilled in the art can adjust the diameters of the gold spraying particles in the first gold spraying layer 21 and the second gold spraying layer 22 according to the number of the gold spraying particles in the first gold spraying layer 21 and the second gold spraying layer 22, for example, when the first gold spraying layer 21 has m gold spraying particles with the diameter of D1, the second gold spraying layer 22 has n gold spraying particles with the diameter of D2, since the surface area of the second gold spraying layer 22 is larger than the surface area of the first gold spraying layer 21, i.e., S2>S1, from the surface area calculation formula: s-4 pi r2The following can be obtained: n (1/2) 4 pi (D2/2)2>m*(1/2)*4*π(D1/2)2Namely:
when m is 2n, D2/D1 is more than 1.4; when m is 3n, D2/D1 is > 1.7. Those skilled in the art can also adjust the diameter of the gold-sprayed particles in the first gold-sprayed layer 21 and the second gold-sprayed layer 22 directly according to the thickness of the core 1, for example, when the thickness D of the core 1 is 8um, the diameter of the gold-sprayed particles in the first gold-sprayed layer 21 is 3um, and the diameter of the gold-sprayed particles in the second gold-sprayed layer 22 is 5 um.
On the basis of the above embodiment, as a preferred embodiment, the total thickness of the first gold-spraying layer 21 and the second gold-spraying layer 22 is 0.5-0.9mm, so as to avoid that the mounting of the capacitor is affected by the excessively thick gold-spraying layer and the adhesion effect of the gold-spraying layer is affected by the excessively thin gold-spraying layer. More preferably, the first gold-sprayed layer 21 and the second gold-sprayed layer 22 are the same in thickness.
Fig. 2 is a schematic structural diagram of a core, and as shown in fig. 2, the core 1 includes an insulating film 11 and a metalized film 12 disposed on the insulating film 11, the length of the metalized film 12 is shorter than that of the insulating film 11, one end of the metalized film 12 is flush with the insulating film 11, the thickness of the metalized film 12 is greater than that of the other end, i.e., the thickness of the metalized film 12 is greater than that of the non-flush end, and the thicker end of the metalized film 12 is connected to a first gold-spraying layer 21, and a protrusion 211 is embedded between the upper surface of the metalized film 12 and the lower surface of the insulating film 11 at an interval.
On the basis of the above embodiment, as a preferred embodiment, the length of the metallized film plating layer 12 is 2-3mm shorter than that of the insulating film 11, so as to avoid creepage, resulting in breakdown of the capacitor, and avoid affecting the capacity of the capacitor.
On the basis of the above embodiment, as a preferred embodiment, the surface of the metallized film plating layer 12 connected to the protrusion 211 is wavy to increase the contact area between the gold-spraying end surface and the first gold-spraying layer 21, improve the adhesion of the gold-spraying particles of the first gold-spraying layer 21, and prevent the gold-spraying layer from falling off in the later processing.
It should be noted that the whole surface of the metallized film coating 12 connected to the protrusion 211 may be set to be wavy, or only the connecting portion of the metallized film coating 12 in contact with the gold-spraying particles of the first gold-spraying layer 21 may be set to be wavy, and the surface of the metallized film coating 12 not in contact with the gold-spraying particles of the first gold-spraying layer 21 is still a plane.
Fig. 3 is the structural schematic diagram of the double-layer metal spraying capacitor with terminals, as shown in fig. 3, the utility model discloses double-layer metal spraying capacitor still includes terminal 3, and two at least terminals 3 set up in one side that protruding 211 was kept away from to second metal spraying layer 22 to fix a position double-layer metal spraying capacitor, make things convenient for its and external connection.
On the basis of the above embodiment, as a preferred embodiment, the terminal 3 is semicircular, and the diameter of the terminal 3 is larger than the diameter of the gold-sprayed particles of the second gold-sprayed layer 22, so that the surface area of the terminal 3 is increased without affecting the conductivity of the capacitor, and the welding with the outside is facilitated.
On the basis of the above embodiment, as a preferred embodiment, the terminal 3 is a pure tin terminal to improve the soldering strength.
In addition to the above embodiments, as a preferred embodiment, the terminal 3 is provided with the copper wire 31, the copper wire 31 is suitable for being connected with the outside, and the copper wire provided in the terminal can enhance the conductivity of the capacitor on one hand and improve the stability of the capacitor welded with the outside on the other hand.
It should be noted that the present invention does not further limit the number of the terminals 3, and those skilled in the art can adjust the number of the terminals 3 according to actual situations.
When the double-layer metal spraying capacitor is prepared, any two adjacent layers of cores 1 are arranged in a staggered mode along the parallel direction, namely the two adjacent layers of cores 1 are not parallel and the two spaced layers of cores 1 are parallel and level, so that a containing cavity is formed between the two spaced layers of cores 1, pure zinc is added into a metal spraying machine gun, then metal spraying particles with the diameter of D1 are sprayed into the containing cavity between the two spaced layers of cores 1 to form a protrusion 211 by adjusting the distance between the metal spraying machine gun and the cores 1, the metal spraying speed of the metal spraying machine gun, the metal spraying melting temperature and other process parameters, so as to adjust the diameter of the metal spraying particles, gold spraying particles with the diameter of D1 are sprayed into the containing cavity between the two spaced layers of cores 1 to form a first metal spraying layer 21 after all the containing cavities are filled with the metal spraying particles with the diameter of D1, then the metal spraying particles with the diameter of D1 are sprayed onto two side surfaces of the cores 1 close to the protrusion 211, and then zinc, and adjusting the diameter of the metal spraying particles to be D2 by adjusting the technological parameters such as the distance between a metal spraying machine gun and the core 1, the metal spraying speed of the metal spraying machine gun, the metal spraying melting temperature and the like, spraying the metal spraying particles with the diameter of D2 on the surface of the first metal spraying layer 21 to form a second metal spraying layer 22 on the surface of the first metal spraying layer 21, and welding a pure tin terminal 3 provided with a copper wire on the surface of the second metal spraying layer 22 to obtain the double-layer metal spraying capacitor. The utility model discloses to spouting gold machine rifle apart from the distance of core 1, spout gold machine rifle spout technological parameter such as gold speed and the gold spraying melting temperature and do not further inject, as long as enable to spout gold particle ground diameter for D1 and D2 can.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to fall within the scope of the present disclosure.
Claims (10)
1. A double layer metal-sprayed capacitor, comprising:
the gold spraying device comprises two gold spraying layers (2) which are oppositely arranged, wherein each gold spraying layer (2) comprises a first gold spraying layer (21) and a second gold spraying layer (22), one side surface of each first gold spraying layer (21) is attached to the corresponding second gold spraying layer (22), and a plurality of bulges (211) are arranged on the other side surface of each first gold spraying layer (21); the diameter of the gold spraying particles of the second gold spraying layer (22) is larger than that of the gold spraying particles of the first gold spraying layer (21);
at least three-layer core (1), core (1) sets up two perpendicularly between the gold spraying layer (2), arbitrary adjacent two-layer core (1) sets up along parallel direction is crisscross, so that protruding (211) are inlayed and are established at arbitrary looks spaced two-layer between core (1).
2. The double layer sputtered gold capacitor of claim 1 wherein the first sputtered gold layer (21) is a pure zinc sputtered gold layer and the second sputtered gold layer (22) is a zinc-tin alloy sputtered gold layer.
3. The double layer gold-sprayed capacitor of claim 1 wherein the diameter of the gold-sprayed particles of the first gold-sprayed layer (21) is 1/3-1/2 of the thickness of the core (1), and the diameter of the gold-sprayed particles of the second gold-sprayed layer (22) is 1.4-2 times the diameter of the gold-sprayed particles of the first gold-sprayed layer (21).
4. The double layer gold-sprayed capacitor according to claim 1, wherein the total thickness of the first gold-sprayed layer (21) and the second gold-sprayed layer (22) is 0.5-0.9 mm.
5. The double-layer metal-sprayed capacitor according to claim 1, wherein the core (1) comprises an insulating film (11) and a metalized film plating layer (12) provided on the insulating film (11), the metalized film plating layer (12) has a length shorter than that of the insulating film (11), one end of the metalized film plating layer (12) is flush with the insulating film (11), the thickness of the metalized film plating layer (12) is greater than that of the other end, the end of the metalized film plating layer (12) flush with the insulating film (11) has a greater thickness, the end of the metalized film plating layer (12) having a greater thickness is connected to the first metal-sprayed layer (21), and the protrusion (211) is embedded between the upper surface of the metalized film plating layer (12) and the lower surface of the insulating film (11) which is spaced apart from the upper surface.
6. The double-layer metal-sprayed capacitor of claim 5, wherein the surface of the metallized film plating layer (12) connected with the bump (211) is wavy.
7. The double layer metal-sprayed capacitor of claim 1, further comprising terminals (3), wherein at least two of the terminals (3) are disposed on a side of the second metal-sprayed layer (22) away from the bump (211).
8. The double layer gold-sprayed capacitor of claim 7 wherein the terminals (3) are semicircular and the diameter of the terminals (3) is larger than the diameter of the gold-sprayed particles of the second gold-sprayed layer (22).
9. The double layer sputtered gold capacitor of claim 7 wherein said terminals (3) are pure tin terminals.
10. The double layer metal-sprayed capacitor according to claim 7, wherein copper wires (31) are provided in the terminals (3), and the copper wires (31) are adapted to be connected to the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022773496.XU CN213635719U (en) | 2020-11-26 | 2020-11-26 | Double-layer metal spraying capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022773496.XU CN213635719U (en) | 2020-11-26 | 2020-11-26 | Double-layer metal spraying capacitor |
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| Publication Number | Publication Date |
|---|---|
| CN213635719U true CN213635719U (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022773496.XU Active CN213635719U (en) | 2020-11-26 | 2020-11-26 | Double-layer metal spraying capacitor |
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| CN (1) | CN213635719U (en) |
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- 2020-11-26 CN CN202022773496.XU patent/CN213635719U/en active Active
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