CN214123720U - Solid-state aluminum electrolytic capacitor of integrated lead frame - Google Patents
Solid-state aluminum electrolytic capacitor of integrated lead frame Download PDFInfo
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- CN214123720U CN214123720U CN202023152890.8U CN202023152890U CN214123720U CN 214123720 U CN214123720 U CN 214123720U CN 202023152890 U CN202023152890 U CN 202023152890U CN 214123720 U CN214123720 U CN 214123720U
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Abstract
The utility model discloses a solid-state aluminum electrolytic capacitor of an integrated lead frame, which comprises a plurality of capacitor cores which are stacked in sequence and are arranged on the lead frame to form a capacitor core package, the capacitor core package forms the solid-state aluminum electrolytic capacitor after being packaged by organic resin, and the lead frame comprises an anode lead frame and a cathode lead frame; the utility model discloses an integration lead frame with separation portion structure piles up the positive pole tongue and the negative pole tongue in the integration lead frame respectively with core positive pole and negative pole in proper order, realizes drawing forth of positive pole and negative pole to form solid-state aluminum electrolytic capacitor after through organic resin encapsulation, the setting of separation portion can effectively prevent outside steam to get into inside the core package through the gap between encapsulation material and the lead frame in the lead frame, thereby promotes the condenser moisture resistance.
Description
Technical Field
The utility model relates to the field of aluminum electrolytic capacitors, in particular to a solid-state aluminum electrolytic capacitor with an integrated lead frame.
Background
Compared with the traditional liquid aluminum electrolytic capacitor, the solid aluminum electrolytic capacitor has higher safety and is more environment-friendly. The laminated solid-state aluminum electrolytic capacitor adopts a multi-chip core parallel superposition structure and a surface mounting design, and has the characteristics of smaller volume, higher reliability, longer service life, more excellent impedance characteristic and the like, so that the laminated solid-state aluminum electrolytic capacitor is widely applied to the electronic industry. However, due to the lead-out manner and packaging process, a gap exists between the organic resin packaging material and the lead metal strip due to different material properties, resulting in poor moisture resistance of the capacitor.
The existing pin leading-out and packaging process of the laminated solid-state aluminum electrolytic capacitor is mainly characterized in that core anodes are sequentially stacked on the front side and the back side of an anode metal strip through welding, and core cathodes are sequentially stacked on the front side and the back side of a cathode metal strip through conductive silver adhesive to form a capacitor core package; and then, under the condition of high temperature and pressurization, the core cladding is encapsulated by organic resin to obtain the laminated solid-state aluminum electrolytic capacitor. Because the cores are stacked on the front side and the back side of the metal strip in sequence, the anode pins and the cathode pins are respectively led out from the middle part of the anode of the core package and the middle part of the cathode of the core package, after resin packaging, gaps exist due to the fact that the organic resin and the metal strip cannot be completely sealed and closed due to different material properties, and external water vapor can enter the interior of the core package through the gaps, so that the performance of the capacitor is deteriorated. In order to optimize the pin leading-out mode and improve the moisture resistance of the capacitor, a solid aluminum electrolytic capacitor with an integrated lead frame needs to be developed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a solid-state aluminum electrolytic capacitor of integration lead frame to solve above-mentioned technical problem.
In order to achieve the above object, the utility model provides a following technical scheme:
a solid aluminum electrolytic capacitor with an integrated lead frame comprises a plurality of capacitor cores and the lead frame, wherein the capacitor cores are sequentially stacked and mounted on the lead frame to form a capacitor core package, the capacitor core package is packaged by organic resin to form a capacitor, and the lead frame comprises an anode lead frame and a cathode lead frame;
the anode lead frame comprises two groups of anode pins which are arranged in parallel, the anode pins comprise two groups of first anode pins which are arranged in parallel, a second anode pin is connected between one ends of the two groups of first anode pins, two groups of second anode pins are symmetrically and fixedly connected with anode bending parts at the side edges which are close to each other, the anode bending parts face the other end opposite to one end of the first anode pins, the anode bending parts and the second anode pins are arranged in a mutually perpendicular mode, an anode blocking part is connected between the side edges of the two groups of anode bending parts far away from the second anode pins, the anode blocking part and the anode bending parts are arranged in a mutually perpendicular mode, an anode tongue is fixedly connected to one side surface of the anode blocking part far away from the second anode pins, and the anode tongue and the first anode pins are arranged in a mutually parallel mode;
the cathode lead frame comprises two groups of cathode pins which are arranged in parallel, the cathode pins comprise two groups of first cathode pins which are arranged in parallel, a second cathode pin is connected between one ends of the two groups of first cathode pins, two groups of second cathode pins are symmetrically and fixedly connected with a cathode bending part at one side edge close to each other, the cathode bending part faces to the other end opposite to one end of the first cathode pin, the cathode bending part and the second cathode pins are arranged in a mutually perpendicular mode, a cathode blocking part is connected between one side edges of the two groups of cathode bending parts far away from the second cathode pins, the cathode blocking part and the cathode bending part are arranged in a mutually perpendicular mode, a cathode tongue is fixedly connected to one side face of the cathode blocking part far away from the second cathode pins, and the cathode tongue and the first cathode pins are arranged in a mutually parallel mode;
the height of the anode bending part is consistent with that of the cathode bending part;
the anode tongue and the cathode tongue are positioned on the same horizontal plane;
the anode of the capacitor core is connected with the anode tongue, and the cathode of the capacitor core is connected with the cathode tongue.
In the capacitor, the anode bending part and the cathode bending part are positioned inside the organic resin packaging shell.
Furthermore, the anode of the capacitor core is arranged on the anode tongue in a welding mode, and the cathode of the capacitor core is adhered to the cathode tongue through conductive silver adhesive.
Furthermore, a gasket is arranged between the anode of the capacitor core and the anode tongue or between the anodes of the capacitor cores.
Further, the length of the anode bending part in the horizontal direction is 5% -10% of the total length of the capacitor, the height of the anode bending part is 15% -80% of the total height of the capacitor, the length of the first anode pin is 15% -30% of the total length of the capacitor, and the length of the anode tongue is 8% -15% of the total length of the capacitor.
Further, the length of the cathode bending part in the horizontal direction is 5% -10% of the total length of the capacitor, the length of the first cathode pin is 15% -30% of the total length of the capacitor, and the length of the cathode tongue part is 35% -50% of the total length of the capacitor.
Further, the width of the anode blocking part and the width of the cathode blocking part are 30-60% of the total width of the capacitor.
Furthermore, the lead frame is made of one of copper and its alloy, tin and its alloy, nickel and its alloy, and gold and its alloy.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an integration lead frame with separation portion structure piles up the positive pole tongue and the negative pole tongue in the integration lead frame respectively with core positive pole and negative pole in proper order, realizes drawing forth of positive pole and negative pole to form solid-state aluminum electrolytic capacitor after through organic resin encapsulation, the setting of separation portion can effectively prevent outside steam to get into inside the core package through the gap between encapsulation material and the lead frame in the lead frame, thereby promotes the condenser moisture resistance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a capacitor according to the present invention;
fig. 2 is a schematic structural diagram of the capacitor core package according to the present invention;
FIG. 3 is a schematic view of a middle anode lead frame according to the present invention;
fig. 4 is a schematic structural view of a middle cathode lead frame according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a capacitor core; 2. a lead frame; 3. a capacitor core package; 4. a capacitor; 5. an anode lead frame; 51. an anode pin; 511. a first anode pin; 512. a second anode pin; 52. an anode bending part; 53. an anode blocking part; 54. an anode tongue; 6. a cathode lead frame; 61. a cathode pin; 611. a first cathode pin; 612. a second cathode pin; 62. a cathode bending part; 63. a cathode blocking part; 64. the cathode tongue.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: the solid aluminum electrolytic capacitor comprises a plurality of capacitor cores 1 and a lead frame 2, wherein the plurality of capacitor cores 1 are sequentially stacked and mounted on the lead frame 2 to form a capacitor core package 3, the capacitor core package 3 is packaged by organic resin to form a capacitor 4, and the lead frame 2 comprises an anode lead frame 5 and a cathode lead frame 6;
the anode lead frame 5 comprises two groups of anode pins 51 arranged in parallel, the anode pins 51 comprise two groups of first anode pins 511 arranged in parallel, a second anode pin 512 is connected between one ends of the two groups of first anode pins 511, the two groups of second anode pins 512 are symmetrically and fixedly connected with anode bending parts 52 at the side edges close to each other, the anode bending parts 52 face the other end opposite to one end of the first anode pin 511, the anode bending parts 52 and the second anode pins 512 are arranged vertically, an anode blocking part 53 is connected between the two groups of anode bending parts 52 at the side edges far away from the second anode pins 512, the anode blocking part 53 and the anode bending part 52 are arranged vertically, an anode tongue 54 is fixedly connected to one side surface of the anode blocking part 53 far away from the second anode pins 512, and the anode tongue 54 and the first anode pins 511 are arranged in parallel;
the cathode lead frame 6 comprises two sets of cathode pins 61 arranged in parallel, the cathode pins 61 comprise two sets of first cathode pins 611 arranged in parallel, a second cathode pin 612 is connected between one ends of the two sets of first cathode pins 611, the two sets of second cathode pins 612 are symmetrically and fixedly connected with cathode bending parts 62 at the side edges close to each other, the cathode bending parts 62 face the other end opposite to one end of the first cathode pins 611, the cathode bending parts 62 and the second cathode pins 612 are arranged in a mutually perpendicular mode, a cathode blocking part 63 is connected between the two sets of cathode bending parts 62 at the side edges far away from the second cathode pins 612, the cathode blocking part 63 and the cathode bending part 62 are arranged in a mutually perpendicular mode, a cathode tongue 64 is fixedly connected to one side surface far away from the second cathode pins 612 of the cathode blocking part 63, and the cathode tongue 64 and the first cathode pins 611 are arranged in parallel;
the height of the anode bending part 52 is consistent with that of the cathode bending part 62;
the anode tongue 54 and the cathode tongue 64 are in the same horizontal plane;
the anode of the capacitor element 1 is connected to the anode tongue 54, and the cathode of the capacitor element 1 is connected to the cathode tongue 64.
In capacitor 4, anode bent portion 52 and cathode bent portion 62 are located inside the organic resin package case.
Specifically, the anode of the capacitor element 1 is mounted on the anode tongue 54 by welding, and the cathode of the capacitor element 1 is bonded to the cathode tongue 64 by conductive silver paste.
Specifically, a gasket is provided between the anode of the capacitor element 1 and the anode tongue 54 or between the anodes of the capacitor elements 1.
Specifically, the length of the anode bending portion 52 in the horizontal direction is 5% -10% of the total length of the capacitor 4, the height of the anode bending portion 52 is 15% -80% of the total height of the capacitor 4, the length of the first anode pin 511 is 15% -30% of the total length of the capacitor 4, and the length of the anode tongue 54 is 8% -15% of the total length of the capacitor 4.
Specifically, the length of the cathode bending part 62 in the horizontal direction is 5% -10% of the total length of the capacitor 4, the length of the first cathode pin 611 is 15% -30% of the total length of the capacitor 4, and the length of the cathode tongue part 64 is 35% -50% of the total length of the capacitor 4.
Specifically, the width of the anode blocking part 53 and the cathode blocking part 63 is 30 to 60% of the total width of the capacitor 4.
Specifically, the lead frame 2 is made of one of copper and its alloy, tin and its alloy, nickel and its alloy, and gold and its alloy.
The utility model discloses an embodiment does:
a solid aluminum electrolytic capacitor with an integrated lead frame comprises 3 capacitor cores 1 and a lead frame 2, wherein the lead frame 2 is made of copper, and the lead frame 2 comprises an anode lead frame 5 and a cathode lead frame 6.
The anode lead frame 5 comprises two groups of anode pins 51 arranged in parallel, the anode pins 51 comprise two groups of first anode pins 511 arranged in parallel, a second anode pin 512 is connected between one ends of the two groups of first anode pins 511, the two groups of second anode pins 512 are symmetrically and fixedly connected with anode bending parts 52 at the side edges close to each other, the anode bending parts 52 face the other end opposite to one end of the first anode pin 511, the anode bending parts 52 and the second anode pins 512 are arranged vertically, an anode blocking part 53 is connected between the two groups of anode bending parts 52 at the side edges far away from the second anode pins 512, the anode blocking part 53 and the anode bending part 52 are arranged vertically, an anode tongue 54 is fixedly connected to one side surface of the anode blocking part 53 far away from the second anode pins 512, and the anode tongue 54 and the first anode pins 511 are arranged in parallel;
the cathode lead frame 6 comprises two sets of cathode pins 61 arranged in parallel, the cathode pins 61 comprise two sets of first cathode pins 611 arranged in parallel, a second cathode pin 612 is connected between one ends of the two sets of first cathode pins 611, the two sets of second cathode pins 612 are symmetrically and fixedly connected with cathode bending parts 62 at the side edges close to each other, the cathode bending parts 62 face the other end opposite to one end of the first cathode pins 611, the cathode bending parts 62 and the second cathode pins 612 are arranged in a mutually perpendicular mode, a cathode blocking part 63 is connected between the two sets of cathode bending parts 62 at the side edges far away from the second cathode pins 612, the cathode blocking part 63 and the cathode bending part 62 are arranged in a mutually perpendicular mode, a cathode tongue 64 is fixedly connected to one side surface far away from the second cathode pins 612 of the cathode blocking part 63, and the cathode tongue 64 and the first cathode pins 611 are arranged in parallel;
the height of the anode bending part 52 is consistent with that of the cathode bending part 62;
the anode tongue 54 and the cathode tongue 64 are in the same horizontal plane;
anodes of 3 capacitor cores 1 are stacked on the anode tongue 54 in sequence by welding, cathodes of the 3 capacitor cores 1 are stacked on the cathode tongue 64 in sequence by conductive silver adhesive to form a capacitor core package 3, and 2 gaskets are arranged between the anodes of the capacitor cores to ensure the consistent thickness of the anodes and the cathodes of the core package; the capacitor core package 3 is encapsulated by epoxy resin to form a capacitor 4. In capacitor 4, anode bent portion 52 and cathode bent portion 62 are located inside the organic resin package case.
The length of the anode bending portion 52 in the horizontal direction is 7% of the total length of the capacitor 4, the height of the anode bending portion 52 is 50% of the total height of the capacitor 4, the length of the first anode lead 511 is 20% of the total length of the capacitor 4, and the length of the anode tongue 54 is 10% of the total length of the capacitor 4.
The horizontal length of the cathode bending part 62 is 7% of the total length of the capacitor 4, the length of the first cathode pin 611 is 20% of the total length of the capacitor 4, and the length of the cathode tongue 64 is 40% of the total length of the capacitor 4.
The width of the anode barrier 53 and the cathode barrier 63 is 45% of the total width of the capacitor 4.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the drawings, and are merely 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 present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (7)
1. A solid-state aluminum electrolytic capacitor of an integrated lead frame is characterized in that: the capacitor core packaging structure comprises a plurality of capacitor cores (1) and a lead frame (2), wherein the plurality of capacitor cores (1) are sequentially stacked and installed on the lead frame (2) to form a capacitor core package (3), the capacitor core package (3) is packaged by organic resin to form a capacitor (4), and the lead frame (2) comprises an anode lead frame (5) and a cathode lead frame (6);
the anode lead frame (5) comprises two sets of anode pins (51) which are arranged in parallel, the anode pins (51) comprise two sets of first anode pins (511) which are arranged in parallel, a second anode pin (512) is connected between one ends of the two sets of first anode pins (511), an anode bending part (52) is symmetrically and fixedly connected to one side of the two sets of second anode pins (512) close to each other, the anode bending part (52) faces to the other end of the first anode pin (511) opposite to one end, the anode bending part (52) and the second anode pin (512) are arranged in a mutually perpendicular mode, an anode blocking part (53) is connected between one side of the two sets of anode bending parts (52) far away from the second anode pin (512), the anode blocking part (53) is vertically arranged with the anode bending part (52), and an anode tongue part (54) is fixedly connected to one side of the anode blocking part (53) far away from the second anode pin (512), the anode tongue part (54) and the first anode pin (511) are arranged in parallel;
the cathode lead frame (6) comprises two groups of cathode pins (61) which are arranged in parallel, the cathode pins (61) comprise two groups of first cathode pins (611) which are arranged in parallel, a second cathode pin (612) is connected between one ends of the two groups of first cathode pins (611), cathode bending parts (62) are symmetrically and fixedly connected to one side of the two groups of second cathode pins (612) close to each other, the cathode bending parts (62) face the other end opposite to one end of the first cathode pins (611), the cathode bending parts (62) and the second cathode pins (612) are arranged in a mutually perpendicular mode, a cathode blocking part (63) is connected between one side of the two groups of cathode bending parts (62) far away from the second cathode pins (612), the cathode blocking part (63) and the cathode bending part (62) are arranged in a mutually perpendicular mode, and a cathode tongue part (64) is fixedly connected to one side of the cathode blocking part (63) far away from the second cathode pins (612), and the cathode tongue (64) and the first cathode pin (611) are arranged in parallel;
the height of the anode bending part (52) is consistent with that of the cathode bending part (62);
the anode tongue (54) and the cathode tongue (64) are in the same horizontal plane;
the anode of the capacitor core (1) is connected with the anode tongue (54), and the cathode of the capacitor core (1) is connected with the cathode tongue (64);
in the capacitor (4), the anode bending part (52) and the cathode bending part (62) are positioned inside an organic resin packaging shell.
2. The solid-state aluminum electrolytic capacitor with an integrated lead frame of claim 1, wherein: the anode of the capacitor core (1) is arranged on the anode tongue (54) in a welding mode, and the cathode of the capacitor core (1) is adhered to the cathode tongue (64) through conductive silver adhesive.
3. The solid-state aluminum electrolytic capacitor with an integrated lead frame of claim 2, wherein: and a gasket is arranged between the anode of the capacitor core (1) and the anode tongue (54) or between the anodes of the capacitor cores (1).
4. The solid-state aluminum electrolytic capacitor with an integrated lead frame of claim 1, wherein: the length of the anode bending part (52) in the horizontal direction is 5% -10% of the total length of the capacitor (4), the height of the anode bending part (52) is 15% -80% of the total height of the capacitor (4), the length of the first anode pin (511) is 15% -30% of the total length of the capacitor (4), and the length of the anode tongue part (54) is 8% -15% of the total length of the capacitor (4).
5. The solid-state aluminum electrolytic capacitor with an integrated lead frame of claim 1, wherein: the length of the cathode bending part (62) in the horizontal direction is 5% -10% of the total length of the capacitor (4), the length of the first cathode pin (611) is 15% -30% of the total length of the capacitor (4), and the length of the cathode tongue part (64) is 35% -50% of the total length of the capacitor (4).
6. The solid-state aluminum electrolytic capacitor with an integrated lead frame of claim 1, wherein: the width of the anode blocking part (53) and the width of the cathode blocking part (63) are 30-60% of the total width of the capacitor (4).
7. The solid-state aluminum electrolytic capacitor with an integrated lead frame of claim 1, wherein: the lead frame (2) is made of one of copper and alloy thereof, tin and alloy thereof, nickel and alloy thereof, and gold and alloy thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023152890.8U CN214123720U (en) | 2020-12-24 | 2020-12-24 | Solid-state aluminum electrolytic capacitor of integrated lead frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023152890.8U CN214123720U (en) | 2020-12-24 | 2020-12-24 | Solid-state aluminum electrolytic capacitor of integrated lead frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214123720U true CN214123720U (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023152890.8U Active CN214123720U (en) | 2020-12-24 | 2020-12-24 | Solid-state aluminum electrolytic capacitor of integrated lead frame |
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|---|---|
| CN (1) | CN214123720U (en) |
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- 2020-12-24 CN CN202023152890.8U patent/CN214123720U/en active Active
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Address after: Room 1110, 1st floor, 160 Jiangbin East Avenue, Mawei District, Fuzhou City, Fujian Province Patentee after: Fujian Guoguang New Industry Technology Co.,Ltd. Address before: Room 1110, 1st floor, 160 Jiangbin East Avenue, Mawei District, Fuzhou City, Fujian Province Patentee before: Fujian Guoguang Xinye Technology Co.,Ltd. |
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