CN214588455U

CN214588455U - Electrolytic capacitor capable of quickly releasing heat

Info

Publication number: CN214588455U
Application number: CN202120171639.1U
Authority: CN
Inventors: 张中喜
Original assignee: Dongguan Chuanghui Electronics Co ltd
Current assignee: Dongguan Chuanghui Electronics Co ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-11-02
Anticipated expiration: 2031-01-21

Abstract

The utility model provides an electrolytic capacitor capable of quickly releasing heat, which comprises an aluminum shell, wherein a core bag is arranged in the aluminum shell, a rubber plug is fixed at the opening of the aluminum shell, the core bag comprises a ceramic core rod, a first electrode foil, a first electrolytic paper, a second electrode foil and a second electrolytic paper which are sequentially laminated are wound outside the ceramic core rod, and a positioning convex column with the height of H is integrally formed at the top of the ceramic core rod; the rubber plug is internally provided with a first abdicating hole, a second abdicating hole and a third abdicating hole, the first pin and the second pin respectively pass through the first abdicating hole and the second abdicating hole, the positioning convex column passes through the third abdicating hole, and the thicknesses of the rubber plug and the aluminum shell are respectively D and D, H (D + D). The utility model discloses set up the ceramic plug that has good heat conductivility in the core package, can effectively improve the heat dispersion of core package, plug and PCB board can effectively be separated to protrusion outside the plug location projection, ensure to possess sufficient ventilation space between them, can release heat through quick.

Description

Electrolytic capacitor capable of quickly releasing heat

Technical Field

The utility model relates to an electrolytic capacitor specifically discloses an electrolytic capacitor of quick heat release.

Background

The electrolytic capacitor is internally provided with an electrolytic paper material for storing charges, and mainly comprises a shell, a biscuit and a rubber plug, wherein the biscuit comprises a core package formed by winding positive and negative foils and electrolytic paper and positive and negative pins riveted on the positive and negative foils respectively, and liquid electrolyte is filled in the shell. Capacitors are one of the electronic components used in a large number of electronic devices, and are widely used for coupling, filtering, tuning, and the like in circuits.

Electrolytic capacitor electric capacity can produce the heat in the course of the work, in case the heat accumulation is too much when resulting in the temperature of electrolyte too high, electrolyte will be evaporated to lead to the swell even explosion scheduling problem, electrolytic capacitor's among the prior art heat dispersion is poor, and long-time work has not negligible potential safety hazard.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need to provide an electrolytic capacitor with fast heat release, which has good heat dissipation performance and can avoid the occurrence of bulge by fast heat release.

In order to solve the prior art problem, the utility model discloses an electrolytic capacitor capable of releasing heat rapidly, including the aluminum hull, be equipped with the core package in the aluminum hull, the opening part of aluminum hull is fixed with the plug, first pin and second pin have been drawn forth to the core package, the core package includes the ceramic plug, the ceramic plug is around rolling up the first electrode foil, first electrolytic paper, second electrode foil and the second electrolytic paper that have stacked gradually, the top integrated into one piece of ceramic plug has the location projection of height H, the one end and the first electrode foil fixed connection of first pin, the one end and the second electrode foil fixed connection of second pin;

the rubber plug is internally provided with a first abdicating hole, a second abdicating hole and a third abdicating hole, the first pin and the second pin respectively pass through the first abdicating hole and the second abdicating hole, the positioning convex column passes through the third abdicating hole, and the thicknesses of the rubber plug and the aluminum shell are respectively D and D, H (D + D).

Furthermore, the aluminum shell is provided with a limit concave edge positioned between the rubber plug and the core bag.

Furthermore, an insulating sleeve is sleeved outside the aluminum shell.

Furthermore, a liquid supply flow channel is arranged in the ceramic core rod and penetrates through the end face and the side face of the ceramic core rod.

Furthermore, a sealing rubber ring is connected between the third abdicating hole and the positioning convex column.

Furthermore, a first supporting block and a second supporting block which are H in height are fixed on one side of the rubber plug, which is far away from the core bag, (H + H) ═ D, a first plug hole is formed in the first supporting block, the first pin is plugged in the first plug hole, a second plug hole is formed in the second supporting block, and the second pin is plugged in the second plug hole.

Furthermore, the first supporting block and the second supporting block are graphene blocks.

The utility model has the advantages that: the utility model discloses an electrolytic capacitor of fast heat release, through set up the ceramic plug that has good heat conductivility in the core package, can effectively improve the heat dispersion of core package, and then improve electrolytic capacitor's heat dispersion, in addition, electrolytic capacitor uses when installing in the PCB board, protrusion outside the rubber plug location projection can effectively separate rubber plug and applied PCB board, ensure to possess sufficient ventilation space between them, thereby further improve electrolytic capacitor's heat dispersion, can effectively avoid taking place the swell through fast heat release, explosion scheduling problem.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic perspective view of the core bag of the present invention.

The reference signs are: the aluminum-clad core-spun aluminum core comprises an aluminum shell 10, a limiting concave edge 11, an insulating sleeve 12, a core package 20, a ceramic core rod 21, a positioning convex column 211, a liquid supply channel 212, a first electrode foil 22, a first pin 221, first electrolytic paper 23, a second electrode foil 24, a second pin 241, second electrolytic paper 25, a rubber plug 30, a first yielding hole 31, a second yielding hole 32, a third yielding hole 33, a sealing rubber ring 331, a first supporting block 41, a first patch hole 411, a second supporting block 42 and a second patch hole 421.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Refer to fig. 1 and 2.

The embodiment of the utility model discloses an electrolytic capacitor capable of releasing heat rapidly, which comprises a cylindrical aluminum shell 10, wherein a core bag 20 is arranged in the aluminum shell 10, a rubber plug 30 is fixed at the opening of the aluminum shell 10, the core bag 20 is positioned in a cavity between the aluminum shell 10 and the rubber plug 30, the opening of the aluminum shell 10 is bent inwards to realize reliable positioning effect on the rubber plug 30, a first pin 221 and a second pin 241 are led out from the core bag 20, the core bag 20 comprises a ceramic core rod 21, a first electrode foil 22, a first electrolytic paper 23, a second electrode foil 24 and a second electrolytic paper 25 which are sequentially stacked are wound outside the ceramic core rod 21, preferably, the first electrode foil 22 and the second electrode foil 24 are both aluminum foils, a positioning convex column 211 with a height of H is integrally formed at the top of the ceramic core rod 21, namely, the positioning convex column 211 is also of a ceramic structure with good heat conductivity, one end of the first pin 221 is fixedly connected with the first electrode foil 22 by rivets and the like, one end of the second pin 241 is fixedly connected to the second electrode foil 24 by means of a rivet or the like;

the rubber plug 30 is provided with a first abdicating hole 31, a second abdicating hole 32 and a third abdicating hole 33, the first pin 221 and the second pin 241 respectively pass through the first abdicating hole 31 and the second abdicating hole 32, the first pin 221 and the second pin 241 are both protruded out of the surface of the rubber plug 30, the positioning convex column 211 passes through the third abdicating hole 33, the thicknesses of the rubber plug 30 and the aluminum shell 10 are respectively D and D, H > (D + D), it can be ensured that the positioning convex column 211 is protruded out of the rubber plug 30 by enough length, a good supporting and separating effect is formed, and the length of the positioning convex column 211 is smaller than the first pin 221 and the second pin 241.

The utility model discloses a set up ceramic plug 21 that has good thermal conductivity and insulating properties in core package 20 and be regarded as the basis of the book of winding of each electrode foil and electrolytic paper, not only can show the heat dispersion that improves core package 20 overall structure, core package 20 non-deformable simultaneously, can effectively improve core package 20 stability; the utility model discloses during electrolytic capacitor installs the use, first pin 221 and second pin 241 connect and insert in the hole that the PCB board corresponds, protrusion in the location projection 211 on plug 30 surface, can effectively restrict the distance between plug 30 and the PCB board, can ensure to be formed with sufficient ventilation interval between electrolytic capacitor and the PCB board, can effectively improve electrolytic capacitor's heat dissipation release efficiency, in addition, location projection 211 protrudes in the outer part of plug 30 and fully contacts with the outside air, can further improve electrolytic capacitor's heat dissipation release performance.

In this embodiment, be equipped with the spacing concave reason 11 that is located between plug 30 and the core package 20 on the aluminum hull 10, spacing concave reason 11 is for the annular sunk structure that is located the aluminum hull 10 inner wall, can effectively improve the spacing effect to core package 20 and plug 30 to aluminum hull 10.

In this embodiment, the aluminum shell 10 is sheathed with an insulating sleeve 12, and the insulating sleeve 12 is generally referred to as a heat shrink sleeve.

In this embodiment, the liquid supply channel 212 is provided in the ceramic core rod 21, and the liquid supply channel 212 penetrates through the end face and the side face of the ceramic core rod 21, so as to allow the electrolyte to flow, ensure that the electrolyte can permeate the electrolytic paper in the battery cell from each position, and effectively improve the capacity of the electrolyte in the aluminum case 10, thereby improving the performance of the electrolytic capacitor.

In this embodiment, a sealant ring 331 is connected between the inner wall of the third abdicating hole 33 and the positioning boss 211, so that the sealing performance of the overall structure can be effectively improved by the sealant ring 331, and the problems of liquid leakage and the like can be avoided.

In this embodiment, a first supporting block 41 and a second supporting block 42, which have a height H, are fixed on one side of the rubber plug 30 away from the core pack 20, (H + H) ═ D), the two supporting blocks are matched with the positioning convex columns 211 protruding out of the rubber plug 30, so that the stability of the position of the electrolytic capacitor when the electrolytic capacitor is installed on a PCB board can be effectively improved, and the problems of inclination and deviation can be avoided.

Based on the above embodiment, the first supporting block 41 and the second supporting block 42 are both graphene blocks, so that the heat dissipation performance of the electrolytic capacitor can be further improved, the reliability of the conductive connection between the pins and the circuit of the circuit board can be effectively improved, and the positioning convex column 211 with insulating performance can effectively avoid the short circuit of the first supporting block 41 and the second supporting block 42.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An electrolytic capacitor capable of releasing heat quickly comprises an aluminum shell (10), wherein a core bag (20) is arranged in the aluminum shell (10), a rubber plug (30) is fixed at an opening of the aluminum shell (10), and a first pin (221) and a second pin (241) are led out of the core bag (20), and the electrolytic capacitor is characterized in that the core bag (20) comprises a ceramic core rod (21), a first electrode foil (22), a first electrolytic paper (23), a second electrode foil (24) and a second electrolytic paper (25) which are sequentially stacked are wound outside the ceramic core rod (21), a positioning convex column (211) with the height of H is integrally formed at the top of the ceramic core rod (21), one end of the first pin (221) is fixedly connected with the first electrode foil (22), and one end of the second pin (241) is fixedly connected with the second electrode foil (24);

be equipped with first hole (31), the second hole (32) of stepping down and third hole (33) of stepping down in plug (30), first pin (221) with second pin (241) pass respectively first hole (31) of stepping down with second hole (32) of stepping down, location projection (211) pass hole (33) of stepping down of third, plug (30) with the thickness of aluminum hull (10) is D and D, H > (D + D) respectively.

2. The electrolytic capacitor with rapid heat release according to claim 1, wherein the aluminum case (10) is provided with a limiting concave edge (11) between the rubber plug (30) and the core pack (20).

3. The electrolytic capacitor with rapid heat release according to claim 1, characterized in that the aluminum case (10) is externally sheathed with an insulating sleeve (12).

4. The electrolytic capacitor with rapid heat release as claimed in claim 1, wherein a liquid supply channel (212) is provided in the ceramic core rod (21), and the liquid supply channel (212) penetrates through the end face and the side face of the ceramic core rod (21).

5. The electrolytic capacitor with rapid heat release as claimed in claim 1, wherein a sealing rubber ring (331) is connected between the third relief hole (33) and the positioning boss (211).

6. The electrolytic capacitor with rapid heat release as claimed in claim 1, wherein a first supporting block (41) and a second supporting block (42) with a height H are fixed on one side of the rubber plug (30) away from the core pack (20), (H + H) ═ D + D), (H + H) ═ D), a first plug jack (411) is arranged in the first supporting block (41), the first pin (221) is inserted in the first plug jack (411), a second plug jack (421) is arranged in the second supporting block (42), and the second pin (241) is inserted in the second plug jack (421).

7. The electrolytic capacitor with rapid heat release as claimed in claim 6, wherein the first support block (41) and the second support block (42) are graphene blocks.