CN212461412U

CN212461412U - High-temperature-resistant filter capacitor

Info

Publication number: CN212461412U
Application number: CN202021481677.9U
Authority: CN
Inventors: 江学虎; 张运泽
Original assignee: Fu Qing Electronics Shenzhen Co ltd
Current assignee: Fu Qing Electronics Shenzhen Co ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-02-02
Anticipated expiration: 2030-07-23

Abstract

The application relates to the field of electronic components, in particular to a high-temperature-resistant filter capacitor, which comprises a shell, wherein a cover body covers the top of the shell, the shell comprises at least one protruding part and at least one recessed part, and the protruding part and the recessed part are connected in a staggered manner; the casing still includes the bottom plate, the bottom plate is connected in the bulge or the depressed part of casing bottom, form the space that is used for loading electrolyte between bulge, depressed part, bottom plate and the lid. This application can make the difficult quilt of condenser damage, has the life's of extension condenser effect.

Description

High-temperature-resistant filter capacitor

Technical Field

The application relates to the field of electronic components, in particular to a high-temperature-resistant filter capacitor.

Background

A capacitor is an electronic component commonly used on circuit boards, and is capable of storing and discharging electric charges. The capacitor may be classified into an electrolytic capacitor, a ceramic capacitor, etc. according to the capacitor dielectric, and the filter capacitor belongs to one of the electrolytic capacitors.

A common filter capacitor includes a casing and a cover connected to the casing, wherein the cover is provided with a positive connection post and a negative connection post. The filter capacitor further includes an electrolyte as a medium, a relatively sealed space is formed between the case and the lid, and the electrolyte is loaded in the space between the case and the lid. When the positive connecting column and the negative connecting column are connected to the circuit board, voltage is applied between the positive connecting column and the negative connecting column, and the filter capacitor can realize storage and release of charges.

In the operation process of the existing filter capacitor, the ripple current can generate loss, so that the filter capacitor releases heat, and the temperature of the filter capacitor is increased. If the temperature of the filter capacitor is continuously increased, the shell of the filter capacitor is easy to crack due to thermal expansion, so that the filter capacitor is damaged, and the service life of the filter capacitor is influenced.

With respect to the related art described above, the inventors consider that there is a drawback that the filter capacitor is easily damaged and the service life is short.

SUMMERY OF THE UTILITY MODEL

In order to make the difficult quilt of condenser damaged, the life of extension condenser, this application provides a high temperature resistant filter capacitor.

The application provides a high temperature resistant filter capacitor adopts following technical scheme:

a high-temperature-resistant filter capacitor comprises a shell, wherein a cover body covers the top of the shell, the shell comprises at least one protruding part and at least one recessed part, and the protruding part and the recessed part are connected in a staggered mode; the casing still includes the bottom plate, the bottom plate is connected in the bulge or the depressed part of casing bottom, form the space that is used for loading electrolyte between bulge, depressed part, bottom plate and the lid.

Through adopting above-mentioned technical scheme, through setting up bulge and depressed part, the cross connection of bulge and depressed part makes shell surface form unsmooth, crooked cambered surface, has increased the area of casing to be favorable to the heat dissipation of condenser, have the effect that improves condenser high temperature resistance, make the condenser be difficult for being damaged, life is longer.

Preferably, the bottom plate is connected with a cooling fin.

By adopting the technical scheme, the radiating fins have the function of promoting heat dissipation, and the heat dissipation effect of the capacitor can be further enhanced.

Preferably, the area of one surface of the radiating fin, which is connected with the bottom plate, is equal to the area of the bottom surface of the bottom plate.

By adopting the technical scheme, when the area of the radiating fin connected with one side of the bottom plate is as large as the area of the bottom surface of the bottom plate, the radiating fin is in maximum contact with the bottom plate, the action area of the radiating fin is increased, and the radiating effect of the capacitor is better.

Preferably, the radiating fins are silica gel radiating fins.

By adopting the technical scheme, the silica gel radiating fin has the advantage of good radiating performance, and the normal operation of the radiating function of the radiating fin can be ensured. And the silica gel fin insulating nature is good, advantages such as shock attenuation nature is good, can more effectual effect to the condenser play the protection.

Preferably, the cover body comprises a sealing part, and the bottom of the sealing part is connected with an annular mounting part; the installation part is embedded into the shell, so that the cover body covers the shell.

Through adopting above-mentioned technical scheme, through setting up the sealing, be equipped with the installation department on the sealing, the installation department can imbed the casing, and the sealing shelters from on the opening of casing through the installation department to realize the installation of lid on the casing.

Preferably, the mounting portion is an interference fit with the housing.

Through adopting above-mentioned technical scheme, interference fit makes the installation department can be more firm install on the casing, has the effect that improves condenser stability and leakproofness.

Preferably, the installation department outer wall is equipped with the fixture block, shells inner wall seted up with fixture block matched with draw-in groove, behind the installation department embedding casing, the fixture block joint in draw-in groove.

Through adopting above-mentioned technical scheme, the fixture block joint in the draw-in groove makes the connection between installation department and the casing more firm, further improves the stability and the leakproofness of condenser.

Preferably, the fixture block is equipped with a plurality ofly, a plurality of fixture block evenly distributed in installation department outer wall.

Through adopting above-mentioned technical scheme, to a certain extent, the quantity of fixture block is more, the distribution is even more, and the connection of installation department on the casing is more firm, and the stability and the leakproofness of condenser are higher.

In summary, the present application includes at least one of the following beneficial technical effects:

through setting up bulge and depressed part, the cross connection of bulge and depressed part makes housing face form unsmooth, crooked cambered surface, has increased the area of casing to be favorable to the heat dissipation of condenser, have the effect that improves the high temperature resistance of condenser, make the condenser difficult quilt damage, life is longer.

Through setting up the fin, the fin has the effect that promotes the heat dissipation, can further strengthen the radiating effect of condenser.

Through setting up a plurality of fixture blocks and draw-in groove to and set up the installation department into with casing interference fit, make the connection of installation department on the casing more firm, stability and leakproofness are higher.

Drawings

FIG. 1 is a schematic diagram of an overall structure of a high temperature resistant filter capacitor according to an embodiment of the present application;

FIG. 2 is a schematic view of a structure for embodying a cover;

fig. 3 is a schematic structural view for embodying the bottom plate.

Description of reference numerals: 1. a housing; 11. a projection; 111. a card slot; 112. a guide groove; 12. a recessed portion; 13. a base plate; 2. a cover body; 21. a sealing part; 22. an installation part; 221. a clamping block; 3. a positive connecting column; 4. a negative connecting column; 5. and a heat sink.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a high-temperature-resistant filter capacitor. Referring to fig. 1, the high temperature resistant filter capacitor includes a case 1, and an electrolyte (not shown) is loaded in the case 1. The casing 1 is connected with a cover body 2, and the cover body 2 is provided with a positive connecting post 3 and a negative connecting post 4. After the positive connecting column 3 and the negative connecting column 4 are connected to the circuit board, voltage is applied between the positive connecting column 3 and the negative connecting column 4, so that the capacitor can realize storage and release of charges.

Referring to fig. 2, the casing 1 is substantially cylindrical as a whole, and the inside of the casing 1 is hollow. The one end of casing 1 is opened to casing 1 open-ended one end is the top, and casing 1 open-top promptly, opening and the inside intercommunication of casing 1, lid 2 lid closes on casing 1.

The lid 2 includes sealing 21, and sealing 21 bottom is equipped with cyclic annular installation department 22, and installation department 22 matches with the opening top at casing 1 top, and installation department 22 can imbed in the opening at casing 1 top, makes sealing 21 close the opening at casing 1 top.

The housing 1 comprises three protrusions 11 and two recesses 12. The protruding portion 11 and the recessed portion 12 are substantially annular, the outer wall of the protruding portion 11 protrudes outward, and the outer wall of the recessed portion 12 is recessed inward. Three convex parts 11 are respectively arranged at the top, the middle and the bottom of the shell 1, and one concave part 12 is connected between two adjacent convex parts 11, namely the convex parts 11 and the concave parts 12 are connected in a staggered manner. The top of the recess 12 is connected to the bottom of the adjacent projection 11 and the bottom of the recess 12 is connected to the top of the adjacent projection 11. Preferably, there is a smooth transition between the protrusion 11 and the depression 12. Wherein the mounting portion 22 is connected to the protrusion 11 at the top of the housing 1.

Referring to fig. 3, a circular bottom plate 13 is integrally formed at the bottom of the case 1, and the bottom plate 13 is coupled to the protrusion 11 at the bottom of the case 1. After the cover 2 is covered on the housing 1, a relatively closed space is formed between the three protrusions 11, the two recesses 12, the bottom plate 13 and the cover 2, and the electrolyte is loaded in the space.

After the three protruding parts 11 and the two recessed parts 12 are connected in a staggered manner, the surface of the shell 1 forms an uneven and curved wavy arc surface, so that the area of the shell 1 is increased, the heat dissipation of the capacitor is facilitated, the effect of improving the high-temperature resistance of the capacitor is achieved, the capacitor is not easy to damage, and the service life is longer.

It should be noted that three convex portions 11 and two concave portions 12 are provided in the present embodiment, but the present invention is not limited to this in other embodiments, and the number of convex portions 11 and concave portions 12 may be reasonably adjusted according to the size of the capacitor, the temperature of the capacitor using environment, and other factors, for example, four convex portions 11 and three concave portions 12, five convex portions 11 and four concave portions 12, and the like are provided.

In order to improve the high temperature resistance of the shell 1, the bottom surface of the bottom plate 13 is provided with a radiating fin 5, and the radiating fin 5 is a silica gel radiating fin. The side surface of the radiating fin 5 is round and matched with the bottom plate 13, and the side surface of the radiating fin 5 is adhered to the bottom surface of the bottom plate 13 and is jointed with the bottom surface of the bottom plate 13. The heat sink 5 has an effect of promoting heat dissipation, and can further enhance the heat dissipation effect of the capacitor. Preferably, the area of the side surface of the heat sink 5 is equal to the area of the bottom surface of the bottom plate 13, that is, the area of the side surface of the heat sink 5 connected to the bottom plate 13 is equal to the area of the bottom surface of the bottom plate 13, so as to increase the effective area of the heat sink 5.

Referring to fig. 2, after the capacitor is used for a long time, oil leakage and oil leakage are inevitable, so that electrolyte in the capacitor is reduced, and a circuit board is easily damaged due to damp breakdown. In order to reduce the above-mentioned situation, the mounting portion 22 is in interference fit with the protruding portion 11 at the top of the housing 1, so that the mounting portion 22 can be more stably mounted on the housing 1, and the effect of improving the stability and the sealing performance of the capacitor is achieved.

Furthermore, eight clamping blocks 221 are uniformly arranged on the outer wall of the mounting portion 22, and the eight clamping blocks 221 protrude out of the outer wall of the mounting portion 22. Correspondingly, the inner wall of the protrusion 11 at the top of the housing 1 is provided with a slot 111 matched with the latch 221, the latches 221 are equal to the slot 111, the latches 221 correspond to the slot 111 one by one, and the latches 221 can be latched to the slot 111. When the installation portion 22 is embedded into the protruding portion 11 at the top of the housing 1, the clamping block 221 slides downwards on the inner wall of the protruding portion 11, and then the clamping groove 111 is clamped, so that the installation portion 22 and the housing 1 are connected more stably, and the stability and the sealing performance of the capacitor are further improved.

In a preferred embodiment, the inner wall of the protrusion 11 at the top of the housing 1 is further formed with a guiding groove 112, an upper end of the guiding groove 112 extends to the top edge of the protrusion 11, and a lower end extends to the locking groove 111 and is communicated with the locking groove 111. In the process that the latch 221 slides to the slot 111, the latch 221 can slide on the guide groove 112, so as to guide the sliding of the latch 221, which is beneficial to more conveniently clamping the latch 221 to the slot 111.

The implementation principle of the high-temperature-resistant filter capacitor in the embodiment of the application is as follows: on the one hand, the surface of the shell 1 forms an uneven and curved wavy arc surface, so that the area of the shell 1 is increased, the heat dissipation of the capacitor is facilitated, and the effect of improving the high-temperature resistance of the capacitor is achieved. On the other hand, the radiating fins 5 have the function of promoting heat dissipation, so that the heat dissipation effect of the capacitor can be further enhanced, and the service life of the capacitor is greatly prolonged.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a high temperature resistant filter capacitor, includes casing (1), casing (1) top lid has closed lid (2), its characterized in that: the shell (1) comprises at least one convex part (11) and at least one concave part (12), and the convex parts (11) and the concave parts (12) are connected in a staggered manner; the shell (1) further comprises a bottom plate (13), the bottom plate (13) is connected to a protruding portion (11) or a recessed portion (12) of the bottom of the shell (1), and a space for loading electrolyte is formed among the protruding portion (11), the recessed portion (12), the bottom plate (13) and the cover body (2).

2. A high temperature resistant filter capacitor as recited in claim 1, wherein: the bottom plate (13) is connected with a radiating fin (5).

3. A high temperature resistant filter capacitor as recited in claim 2, wherein: the area of one surface of the radiating fin (5) connected with the bottom plate (13) is equal to the area of the bottom surface of the bottom plate (13).

4. A high temperature resistant filter capacitor as recited in claim 2, wherein: the radiating fins (5) are silica gel radiating fins.

5. A high temperature resistant filter capacitor as recited in claim 1, wherein: the cover body (2) comprises a sealing part (21), and the bottom of the sealing part (21) is connected with an annular mounting part (22); the mounting part (22) is embedded into the shell (1) to enable the cover body (2) to cover the shell (1).

6. The high temperature resistant filter capacitor of claim 5, wherein: the mounting part (22) is in interference fit with the shell (1).

7. The high temperature resistant filter capacitor of claim 5, wherein: installation department (22) outer wall is equipped with fixture block (221), casing (1) inner wall seted up with fixture block (221) matched with draw-in groove (111), installation department (22) embedding casing (1) back, fixture block (221) joint in draw-in groove (111).

8. A high temperature resistant filter capacitor as recited in claim 7, wherein: the clamping blocks (221) are arranged in a plurality of numbers, and the clamping blocks (221) are uniformly distributed on the outer wall of the mounting portion (22).