CN212182152U

CN212182152U - Capacitor shell and capacitor thereof

Info

Publication number: CN212182152U
Application number: CN201922398320.8U
Authority: CN
Inventors: 林为杰
Original assignee: Shenzhen Xinfujing Electronics Co ltd
Current assignee: Shenzhen Xinfujing Electronics Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-12-18
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a capacitor case, include: the heat dissipation device comprises a heat dissipation shell, a first heat dissipation device and a second heat dissipation device, wherein the heat dissipation shell is provided with a first opening cavity, and the outer wall of the heat dissipation shell is provided with a groove; an inner shell having a second open chamber disposed therein, the inner shell disposed within the first open chamber; the heat conducting layer is arranged between the inner wall of the first open cavity and the outer wall of the inner shell and is tightly connected with the inner wall of the first open cavity; the bottom cover is provided with a through hole and is arranged at the top of the heat dissipation outer shell and fixedly connected with the heat dissipation outer shell or the inner shell; the sealing layer is arranged in the through hole and is fixedly connected with the inner wall of the through hole; and a capacitor using such a case; possesses good passive radiating effect and explosion-proof ability.

Description

Capacitor shell and capacitor thereof

Technical Field

The utility model relates to electrolytic capacitor technical field especially involves the casing and the supporting electric capacity body of condenser.

Background

The existing capacitor has the potential safety hazard in the actual use process because the service life of a product is shortened due to the severe use environment and the overhigh long-time working load, and even the capacitor is overheated to seep out a medium, so that highly toxic gas is generated and the explosion of a shell is caused. Generally, capacitors are often arranged between interlayers in actual work, and the temperature is gradually increased due to insufficient ventilation and low passive heat dissipation efficiency, which can accumulate heat after long-time work; the medium is often leaked out of the guide pin after the capacitor is overheated, so that the use of the capacitor is influenced and potential safety hazards are generated; the explosion caused by the overheating of the capacitor can generate a large amount of fragments to cause secondary damage. Accordingly, there is a need for a capacitor housing and capacitor used therewith that solves one or more of the above problems.

SUMMERY OF THE UTILITY MODEL

For solving one or more problems that exist among the prior art, the utility model provides a capacitor shell and a condenser that uses this casing, the utility model discloses a solve the technical scheme that above-mentioned problem adopted and be: a capacitor case, comprising: the heat dissipation device comprises a heat dissipation shell, a first heat dissipation device and a second heat dissipation device, wherein the heat dissipation shell is provided with a first opening cavity, and the outer wall of the heat dissipation shell is provided with a groove; an inner shell having a second open chamber disposed therein, the inner shell disposed within the first open chamber; the heat conducting layer is arranged between the inner wall of the first open cavity and the outer wall of the inner shell and is tightly connected with the inner wall of the first open cavity; the bottom cover is provided with a through hole and is arranged at the top of the heat dissipation outer shell and fixedly connected with the heat dissipation outer shell or the inner shell; and the sealing layer is arranged in the through hole and is fixedly connected with the inner wall of the through hole. Furthermore, the number of the grooves is more than or equal to three, and the grooves are used for increasing the surface area of the heat dissipation shell, so that passive heat dissipation is enhanced. Further, the minimum thickness of the inner shell and the heat dissipation outer shell is larger than the maximum thickness of the heat conduction layer; the thickness of the sealing layer is equal to or less than that of the bottom cover; the thickness of the inner shell is smaller than that of the heat dissipation outer shell; the diameter of the through hole is smaller than the inner diameter of the inner shell. Further, a groove is formed in the top of the inner shell; the top surface or the bottom surface of the bottom cover is provided with a flange matched with the groove, and the top surface or the bottom surface of the bottom cover and the groove can be used for matching positioning or fastening and fixing; the fixed connection mode of the bottom cover and the heat dissipation shell is glue and/or a buckle. And a capacitor using the above capacitor outer casing, the shape and size of the capacitor is adapted to the second cavity, the capacitor is installed in the second cavity of the inner casing and fixedly connected, it should be noted that the internal medium of the capacitor can be arranged in the second cavity.

The utility model discloses the beneficial value who gains is: the utility model connects the heat dissipation outer shell, the inner shell, the heat conduction layer, the bottom cover and the sealing layer together through an ingenious structure, the heat conduction layer is thin and can fully fill and connect the inner shell and dissipate heat, so that the capacitor installed in the utility model can still obtain enough passive heat dissipation effect under severe use environment or long-time load working condition to avoid overheating; even send the medium of overheated in the condition to avoid the electric capacity to ooze simultaneously, further, the heat-conducting layer has good plasticity and heat conductivity, can absorb tiny piece when electric capacity explodes and reduce the kinetic energy of bold piece, has greatly improved above the utility model discloses a practical value.

Drawings

Fig. 1 is a perspective view of a capacitor case and a capacitor thereof according to the present invention;

fig. 2 is a front view of a capacitor case and a capacitor thereof according to the present invention;

fig. 3 is a sectional view in a-a direction of a front view of a capacitor case and a capacitor thereof according to the present invention;

fig. 4 is an enlarged view of a cross-sectional view taken along a-a direction of a front view of a capacitor case and a capacitor thereof according to the present invention.

[ reference numerals ]

101. heat dissipation shell

102. groove

201. heat conducting layer

301. inner shell

302. groove

401 capacitor

501. bottom cover

502. flange

503. Via hole

601. sealing layer

701. lead.

Detailed Description

In order to make the above objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the invention.

As shown in fig. 1-4, the utility model discloses a capacitor shell, include: the heat dissipation device comprises a heat dissipation shell 101, wherein the heat dissipation shell 101 is provided with a first opening chamber, and a groove 102 is formed in the outer wall of the heat dissipation shell 101; an inner shell 301, the inner shell 301 being provided with a second open chamber, the inner shell 301 being provided within the first open chamber; the heat conduction layer 201 is arranged between the inner wall of the first open cavity and the outer wall of the inner shell, and the heat conduction layer 201 is tightly connected with the inner wall of the first open cavity; a bottom cover 501, wherein the bottom cover 501 is provided with a through hole 503, and the bottom cover 501 is arranged on the top of the heat dissipation outer shell 101 and is fixedly connected with the heat dissipation outer shell 101 or the inner shell 301; and the sealing layer 601 is arranged in the through hole 503 and is fixedly connected with the inner wall of the through hole 503.

It should be noted that, the heat conducting layer 201 is made of a material with good plasticity, thermal conductivity and toughness, which not only provides good thermal conductivity and fills the gap, but also absorbs fine fragments and large fragments generated by explosion when the capacitor 401 is exploded due to overheating, reduces kinetic energy of the fragments, and reduces secondary damage to people or settings caused by the fragments. The heat dissipation housing 101 is provided with a groove for improving the heat dissipation effect, and meanwhile, the thickness is large, the explosion-proof function is weak, and therefore, the heat conduction layer is very necessary. Specifically, as shown in fig. 1, the number of the grooves 102 is 3, the depth of the groove 102 is at least half of the thickness of the heat dissipation housing 101, the groove 102 plays a role in increasing the surface area of the heat dissipation housing 102, so as to enhance the passive heat dissipation effect of the heat dissipation housing 102, and the groove 102 can be randomly arranged on the premise of increasing the surface area of the heat dissipation housing 101. Specifically, as shown in fig. 3, the minimum thickness of the inner shell 301 and the heat dissipation outer shell 101 is greater than the maximum thickness of the heat conduction layer 201, the inner shell 301 is smaller than the heat dissipation outer shell 101, and the heat layer 201 plays a role of filling and connecting the gap between the inner shell 301 and the heat dissipation outer shell 101, and simultaneously, enhancing the heat transfer between the two; the main purpose of the minimal thickness of the heat conductive layer 201 is to reduce the thickness of the entire capacitor housing to avoid the housing from being too bulky, and similarly, the reason that the inner housing 301 is smaller than the heat dissipating housing 101 is to avoid the housing from being too bulky. Specifically, as shown in fig. 3, the thickness of the sealing layer 601 is equal to or less than that of the bottom cover 501, which is used for ensuring the overall aesthetic property and reducing the production cost, the sealing layer 601 is used for sealing the whole product in the last step of production, including the capacitor 401 installed in the inner shell 301, and the sealing layer 601 has the functions of water resistance and high temperature resistance, so as to prevent the medium in the capacitor from seeping out. The diameter of the through hole 503 is smaller than the inner diameter of the inner housing 301, which facilitates the clamping of the capacitor 401 disposed in the inner housing 301, however, there are two methods for disposing the capacitor 401: 1. the capacitor 401 is an independent body and then arranged in the second cavity of the inner shell 301; 2. the capacitor 401 is integrated with the inner housing 301, i.e. the material inside the capacitor 401 is: a positive electrode foil, a negative electrode foil, electrolytic paper, and the like, which are directly disposed in the second chamber of the inner casing 301; the second method is preferred. Specifically, as shown in fig. 3 and 4, a groove 302 is arranged on the top of the inner shell 301; the top surface or the bottom surface of the bottom cover 501 is provided with a flange 502 which is matched with the groove 302, and the matched use of the groove 302 and the flange 502 is as follows: the inner shell 301 and the bottom cover 501 are fixedly connected by positioning and/or forming a buckle. It should be noted that the depth of the groove 302 is greater than the height of the flange 502, which acts to absorb excess glue while enhancing the strength of the connection. The fixed connection mode of the bottom cover 501 and the heat dissipation shell 101 is glue and/or a buckle, and the two methods are simple, convenient and practical. And a capacitor 401 using the above capacitor outer housing, the shape and size of the capacitor 401 is adapted to the second cavity of the inner housing 301, the capacitor 401 is installed in the second cavity of the inner housing 301 and is fixedly connected, and heat-conducting glue is applied between the capacitor 401 and the inner housing.

To sum up, the utility model connects the heat dissipation outer shell, the inner shell, the heat conduction layer, the bottom cover and the sealing layer together through an ingenious structure, the heat conduction layer is thin and can fully fill and connect the inner shell and dissipate heat, so that the capacitor installed in the utility model can still obtain enough passive heat dissipation effect under severe use environment or long-time load working condition to avoid overheating; even send the medium of overheated in the condition to avoid the electric capacity to ooze simultaneously, further, the heat-conducting layer has good plasticity and heat conductivity, can absorb tiny piece when electric capacity explodes and reduce the kinetic energy of bold piece, has greatly improved above the utility model discloses a practical value. The above-described embodiments merely represent one or more embodiments of the present invention, which are described in detail and concrete, but are not to be construed as limiting the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A capacitor case, comprising:

the heat dissipation device comprises a heat dissipation shell, a first heat dissipation device and a second heat dissipation device, wherein the heat dissipation shell is provided with a first opening cavity, and the outer wall of the heat dissipation shell is provided with a groove;

an inner shell having a second open chamber disposed therein, the inner shell disposed within the first open chamber;

the heat conducting layer is arranged between the inner wall of the first open cavity and the outer wall of the inner shell and is tightly connected with the inner wall of the first open cavity;

the bottom cover is provided with a through hole and is arranged at the top of the heat dissipation outer shell and fixedly connected with the heat dissipation outer shell or the inner shell;

and the sealing layer is arranged in the through hole and is fixedly connected with the inner wall of the through hole.

2. A capacitor case according to claim 1, wherein the number of the grooves is three or more.

3. A capacitor case as recited in claim 1, wherein a minimum thickness of said inner shell and said heat dissipating outer shell is greater than a maximum thickness of said thermally conductive layer.

4. A capacitor case according to claim 1 or 3, wherein the sealing layer has a thickness equal to or less than that of the bottom cover.

5. A capacitor case according to claim 4, wherein the thickness of the inner case is less than the thickness of the heat dissipating outer case.

6. A capacitor case according to claim 5, wherein the diameter of the through hole is smaller than the inner diameter of the inner case.

7. A capacitor case according to claim 6, wherein the inner portion

The top of the shell is provided with a groove; and a flange matched with the groove is arranged on the top surface or the bottom surface of the bottom cover.

8. The capacitor casing as claimed in claim 7, wherein the bottom cover is fixedly connected to the heat dissipation casing by glue and/or snap.

9. A capacitor using the capacitor case of any one of claims 1-8, wherein the capacitor is sized and shaped to fit within the second open cavity of the inner housing.