CN216749600U - Capacitor with good heat dissipation performance - Google Patents

Abstract

The utility model belongs to the technical field of capacitors, and particularly relates to a capacitor with good heat dissipation performance, which comprises an aluminum shell, a capacitor core and a heat dissipation sleeve; a containing cavity is arranged in the aluminum shell, and the capacitor core is arranged in the containing cavity; the capacitor core is wrapped by a heat dissipation silica gel sleeve, the heat dissipation silica gel sleeve is sleeved with an inner heat absorption layer, and a first heat absorption cavity is arranged in the inner heat absorption layer; an outer heat absorption layer is sleeved outside the aluminum shell, and a second heat absorption cavity is arranged in the outer heat absorption layer; a box body is embedded at the bottom of the aluminum shell, the upper end of the first heat absorption cavity is communicated with the upper end of the second heat absorption cavity through a plurality of first pipelines, the lower end of the first heat absorption cavity and the lower end of the second heat absorption cavity are communicated with the box body through a plurality of second pipelines, and heat conduction oil is filled in the first heat absorption cavity, the second heat absorption cavity and the box body; the outer heat absorption layer overcoat is equipped with the heat dissipation cover, spreads the heat that the condenser core produced to the external world fast through the conduction oil, and heat transfer efficiency is high to improve the radiating effect of condenser greatly.

Description

Capacitor with good heat dissipation performance

Technical Field

The utility model belongs to the technical field of capacitors, and particularly relates to a capacitor with good heat dissipation performance.

Background

The capacitor is formed by two conductors which are close to each other and a layer of non-conductive insulating medium is sandwiched between the two conductors. When a voltage is applied across the two plates of the capacitor, the capacitor stores charge. The capacitance of the capacitor is numerically equal to the ratio of the amount of charge on one conductive plate to the voltage between the two plates. The basic unit of capacitance of a capacitor is farad (F). The capacitor element is generally denoted by letter C in the circuit diagram. Capacitors play an important role in circuits such as tuning, bypassing, coupling, filtering, etc. The tuning circuit of transistor radio, CD player and recorder is used, and the coupling circuit and by-pass circuit of colour TV set are also used. With the change of electronic information technology, the update speed of digital electronic products is faster and faster, and the production and sales volume of consumer electronic products such as flat panel televisions (LCDs and PDPs), notebook computers, and digital cameras is continuously increasing, which drives the growth of capacitor industry.

The existing heat dissipation type capacitor is characterized in that a layer of heat dissipation silica gel wraps the outer wall of a capacitor core, and heat of the capacitor core is transferred to an aluminum shell through a heat dissipation pipe, so that the purpose of heat dissipation is achieved. However, in the above heat dissipation method, the efficiency of transferring heat to the aluminum case is very low, which results in poor heat dissipation effect of the capacitor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a capacitor with good heat dissipation performance, and aims to solve the technical problem that the heat dissipation effect of the capacitor in the prior art is poor.

In order to achieve the above object, an embodiment of the present invention provides a capacitor with good heat dissipation performance, which includes an aluminum housing, a capacitor core, and a heat dissipation sleeve; the capacitor core is arranged in the cavity, an anode lead and a cathode lead are arranged on the capacitor core, and both the anode lead and the cathode lead penetrate through the top of the aluminum shell and extend out of the aluminum shell; the capacitor core is wrapped by a heat dissipation silica gel sleeve, an inner heat absorption layer is sleeved outside the heat dissipation silica gel sleeve, and a first heat absorption cavity is arranged in the inner heat absorption layer; an outer heat absorption layer is sleeved outside the aluminum shell, and a second heat absorption cavity is arranged in the outer heat absorption layer; a box body is embedded at the bottom of the aluminum shell, the upper end of the first heat absorption cavity is communicated with the upper end of the second heat absorption cavity through a plurality of first pipelines, the lower end of the first heat absorption cavity and the lower end of the second heat absorption cavity are communicated with the box body through a plurality of second pipelines, and heat conduction oil is filled in the first heat absorption cavity, the second heat absorption cavity and the box body; the heat dissipation sleeve is sleeved outside the outer heat absorption layer.

Optionally, the heat dissipation sleeve comprises a bottom and a surrounding wall extending vertically upwards along the edge of the bottom; the bottom holds the bottom of the aluminum shell and the box body, and the surrounding wall is sleeved outside the outer heat absorption layer.

Optionally, the outer wall of the enclosure wall is provided with a plurality of heat dissipation grooves extending through the circumferential direction of the enclosure wall, and the outer heat absorption layer is at least partially exposed out of the heat dissipation grooves.

Optionally, the heat sink is vertically disposed on an outer wall of the enclosure wall.

Optionally, a mounting rack is arranged in the accommodating cavity; the lower end of the mounting frame is connected with the inner wall of the bottom of the containing cavity, a mounting groove is formed in the upper end of the mounting frame, and the lower end of the inner heat absorption layer is inserted into the mounting groove in a matched mode, so that the capacitor core is fixedly mounted in the containing cavity.

Optionally, the outer wall of the mounting frame is annularly hollowed out to form a plurality of hollowed-out grooves.

Optionally, the lower end of the mounting frame is dug to form a clearance groove, and the upper end of the box body is accommodated in the clearance groove.

Optionally, a rubber plug is accommodated between the inner wall of the top of the cavity and the outer wall of the top of the heat dissipation silica gel sleeve.

Optionally, the inner heat absorption layer comprises a bottom layer and a wall layer extending vertically upwards along the edge of the bottom layer; the first heat absorption cavity is arranged in the bottom layer and the wall layer, the bottom layer supports the bottom of the heat dissipation silica gel sleeve, and the wall layer is sleeved outside the side wall of the heat dissipation silica gel sleeve.

Optionally, the outer heat-absorbing layer is annular, and the outer heat-absorbing layer is sleeved on the side wall of the aluminum shell.

Compared with the prior art, one or more technical solutions in the capacitor with good heat dissipation performance provided by the embodiment of the present invention have at least one of the following technical effects:

1. the heat that the condenser core produced can be absorbed by heat dissipation silica gel cover, the heat transmission layer department inside after the heat is absorbed to heat dissipation silica gel cover, then inside heat absorption layer will absorb the heat and transmit the conduction oil of first heat absorption intracavity, the conduction oil in the first heat absorption intracavity can remove to the second heat absorption chamber of the lower outer heat absorption layer of temperature after absorbing the heat, thereby transfer the heat to the conduction oil of second heat absorption intracavity, the heat that the conduction oil received in the second heat absorption intracavity at last dispels the heat to the external world through the heat dissipation cover, therefore, the heat that produces the condenser core is diffused to the external world fast through the conduction oil, heat transfer efficiency is high, thereby greatly improve the radiating effect of condenser.

2. The inner heat absorption layer wraps the heat dissipation silica gel sleeve, the contact area between the inner heat absorption layer and the heat dissipation silica gel sleeve is large, so that heat absorbed by the heat dissipation silica gel sleeve can be quickly transferred to the inner heat absorption layer, the contact area between the outer heat absorption layer and the heat dissipation sleeve is large, heat received by the second heat absorption cavity can be quickly transferred to the heat dissipation sleeve, heat is dissipated to the outside through the heat dissipation sleeve, the heat transfer efficiency is high, and heat dissipation is quick.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings may be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of a capacitor with good heat dissipation performance according to the present invention.

Fig. 2 is a sectional view of a capacitor having excellent heat dissipation performance according to the present invention.

Fig. 3 is a partial exploded view of a capacitor having good heat dissipation performance according to the present invention.

Wherein, in the figures, the respective reference numerals:

100. an aluminum housing; 110. a cavity; 120. a mounting frame; 121. mounting grooves; 122. hollowing out the grooves; 123. an empty avoiding groove; 130. a rubber plug;

200. a capacitor core; 210. a positive electrode lead; 220. a negative electrode lead; 230. a heat dissipation silica gel sleeve;

300. a heat dissipation sleeve; 310. a bottom portion; 320. a surrounding wall; 330. a heat sink;

400. an inner heat absorption layer; 410. a first endothermic chamber; 420. a first conduit; 430. a bottom layer; 440. a wall layer;

500. an outer heat-absorbing layer; 510. a second heat absorption chamber; 520. a second conduit;

600. and (4) a box body.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "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 in describing the embodiments of the present invention and simplifying the description, but 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 thus, should not be construed as limiting the present 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In one embodiment of the present invention, referring to fig. 1, 2 and 3, there is provided a capacitor having good heat dissipation performance, including an aluminum case 100, a capacitor core 200 and a heat dissipation sleeve 300.

Referring to fig. 1, 2 and 3, a cavity 110 is provided in the aluminum case 100, the capacitor core 200 is installed in the cavity 110, the capacitor core 200 is provided with a positive lead 210 and a negative lead 220, and the positive lead 210 and the negative lead 220 both penetrate through the top of the aluminum case 100 and extend out of the aluminum case 100. The positive lead 210 and the negative lead 220 are connected to a voltage, respectively, so that charges can be stored in the capacitor element 200.

Referring to fig. 1, 2 and 3, the capacitor core 200 is wrapped by a heat dissipation silica gel sleeve 230, an inner heat absorption layer 400 is sleeved outside the heat dissipation silica gel sleeve 230, and a first heat absorption cavity 410 is arranged in the inner heat absorption layer 400. An outer heat absorption layer 500 is sleeved outside the aluminum shell 100, and a second heat absorption cavity 510 is arranged inside the outer heat absorption layer 500. The bottom 310 of the aluminum casing 100 is embedded with a box body 600, the upper end of the first heat absorption cavity 410 is communicated with the upper end of the second heat absorption cavity 510 through a plurality of first pipelines 420, the lower end of the first heat absorption cavity 410 and the lower end of the second heat absorption cavity 510 are communicated with the box body 600 through a plurality of second pipelines 520, and heat conduction oil is filled in the first heat absorption cavity 410, the second heat absorption cavity 510 and the box body 600. The heat dissipation sleeve 300 is sleeved outside the outer heat absorption layer 500.

Compared with the prior art, the capacitor with good heat dissipation performance provided by the embodiment of the utility model has one of the following technical effects:

1. the heat generated by the capacitor core 200 is absorbed by the heat dissipation silica gel sleeve 230, the heat is absorbed by the heat dissipation silica gel sleeve 230 and then transferred to the inner heat absorption layer 400, then the heat is transferred to the heat conduction oil in the first heat absorption cavity 410 by the inner heat absorption layer 400, the heat conduction oil in the first heat absorption cavity 410 absorbs heat and then moves to the second heat absorption cavity 510 of the outer heat absorption layer 500 with lower temperature, so that the heat is transferred to the heat conduction oil in the second heat absorption cavity 510, and finally the heat received by the heat conduction oil in the second heat absorption cavity 510 is dissipated to the outside through the heat dissipation sleeve 300, so that the heat generated by the capacitor core 200 is rapidly diffused to the outside through the heat conduction oil, the heat transfer efficiency is high, and the heat dissipation effect of the capacitor is greatly improved.

2. The inner heat absorption layer 400 wraps the heat dissipation silica gel sleeve 230, the contact area between the inner heat absorption layer 400 and the heat dissipation silica gel sleeve 230 is large, so that heat absorbed by the heat dissipation silica gel sleeve 230 can be quickly transferred to the inner heat absorption layer 400, the contact area between the outer heat absorption layer 500 and the heat dissipation sleeve 300 is large, so that heat received by the second heat absorption cavity 510 can be quickly transferred to the heat dissipation sleeve 300, heat is dissipated to the outside through the heat dissipation sleeve 300, the heat transfer efficiency is high, and the heat dissipation is quick.

In another embodiment of the present invention, referring to fig. 1, 2 and 3, the heat dissipation sleeve 300 includes a bottom 310 and a surrounding wall 320 extending vertically upward along the edge of the bottom 310. The bottom 310 supports the bottom 310 of the aluminum casing 100 and the box 600, and the surrounding wall 320 is sleeved outside the outer heat absorption layer 500, so that heat received by the second heat absorption chamber 510 can be quickly transferred to the heat dissipation sleeve 300, which is beneficial to heat dissipation.

Further, referring to fig. 1, 2 and 3, a plurality of heat dissipation grooves 330 are formed on the outer wall of the enclosure wall 320 in a penetrating manner along the circumferential direction, and the outer heat absorption layer 500 is at least partially exposed to the heat dissipation grooves 330. The heat received by the outer heat-absorbing layer 500 can be transferred to the heat-dissipating sleeve 300, and dissipated to the outside through the heat-dissipating sleeve 300, and the heat received by the outer heat-absorbing layer 500 can also be dissipated to the outside directly through the heat-dissipating grooves 330, so that the heat dissipation efficiency of the outer heat-absorbing layer 500 can be improved, and the heat dissipation is faster.

Referring to fig. 1, 2 and 3, the heat dissipation sleeve 300 can also play a role in protection, reduce the probability of direct collision on the outer heat absorption layer 500, effectively prevent the outer heat absorption layer 500 from being broken and leaking oil, and has a stable structure.

Further, referring to fig. 1, 2 and 3, the heat sink 330 is vertically disposed on the outer wall of the surrounding wall 320, so as to improve the heat dissipation effect.

In another embodiment of the present invention, referring to fig. 1, 2 and 3, a mounting frame 120 is disposed in the cavity 110. The lower end of the mounting bracket 120 is connected to the inner wall of the bottom 310 of the cavity 110, the upper end of the mounting bracket 120 is provided with a mounting groove 121, and the lower end of the inner heat-absorbing layer 400 is adapted to be inserted into the mounting groove 121, so that the capacitor core 200 is fixedly mounted in the cavity 110, and the mounting is convenient and stable.

Further, referring to fig. 1, 2 and 3, the outer wall of the mounting bracket 120 is annularly hollowed to form a plurality of hollowed-out grooves 122, and the plurality of hollowed-out grooves 122 are dug to reduce the weight of the mounting bracket 120, so as to reduce the overall weight of the capacitor.

Further, referring to fig. 1, 2 and 3, a clearance groove 123 is dug at the lower end of the mounting bracket 120, and the upper end of the box body 600 is accommodated in the clearance groove 123, so that the space of the mounting bracket 120 is reasonably utilized, the structure is compact, and the overall volume of the capacitor is reduced.

In another embodiment of the present invention, referring to fig. 1, 2 and 3, a rubber stopper 130 is accommodated between the top inner wall of the cavity 110 and the top outer wall of the heat-dissipating silicone sleeve 230, the positive lead 210 and the negative lead 220 both penetrate through the rubber stopper 130, and the capacitor core 200 is compressed by the rubber stopper 130, so as to prevent the capacitor core 200 from loosening.

In another embodiment of the present invention, referring to fig. 1, 2 and 3, the inner thermal absorption layer 400 includes a bottom layer 430 and a wall layer 440 extending vertically upward along an edge of the bottom layer 430. The first heat absorption cavity 410 is arranged in the bottom layer 430 and the wall layer 440, the bottom layer 430 supports the bottom 310 of the heat dissipation silica gel sleeve 230, the wall layer 440 is sleeved outside the side wall of the heat dissipation silica gel sleeve 230 to increase the contact area between the inner heat absorption layer 400 and the heat dissipation silica gel sleeve 230, so that heat absorbed by the heat dissipation silica gel sleeve 230 can be quickly transferred to the inner heat absorption layer 400, and the heat transfer efficiency is high.

In another embodiment of the present invention, referring to fig. 1, 2 and 3, the outer heat-absorbing layer 500 is annular, and the outer heat-absorbing layer 500 is sleeved on the side wall of the aluminum casing 100, so that the structure is simple and the installation is convenient.

The rest of this embodiment is the same as the first embodiment, and the unexplained features in this embodiment are explained by the first embodiment, which is not described herein again.

The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the present invention pertains, the architecture form can be flexible and varied without departing from the concept of the present invention, and a series of products can be derived. But rather a number of simple derivations or substitutions are made which are to be considered as falling within the scope of the utility model as defined by the appended claims.

Claims (10)

1. A capacitor with good heat dissipation performance is characterized by comprising an aluminum shell, a capacitor core and a heat dissipation sleeve; the capacitor core is arranged in the cavity, an anode lead and a cathode lead are arranged on the capacitor core, and both the anode lead and the cathode lead penetrate through the top of the aluminum shell and extend out of the aluminum shell; the capacitor core is wrapped by a heat dissipation silica gel sleeve, an inner heat absorption layer is sleeved outside the heat dissipation silica gel sleeve, and a first heat absorption cavity is arranged in the inner heat absorption layer; an outer heat absorption layer is sleeved outside the aluminum shell, and a second heat absorption cavity is arranged in the outer heat absorption layer; a box body is embedded at the bottom of the aluminum shell, the upper end of the first heat absorption cavity is communicated with the upper end of the second heat absorption cavity through a plurality of first pipelines, the lower end of the first heat absorption cavity and the lower end of the second heat absorption cavity are communicated with the box body through a plurality of second pipelines, and heat conduction oil is filled in the first heat absorption cavity, the second heat absorption cavity and the box body; the heat dissipation sleeve is sleeved outside the outer heat absorption layer.

2. The capacitor with good heat dissipation performance as claimed in claim 1, wherein: the heat dissipation sleeve comprises a bottom and a surrounding wall vertically extending upwards along the edge of the bottom; the bottom holds the bottom of the aluminum shell and the box body, and the surrounding wall is sleeved outside the outer heat absorption layer.

3. The capacitor with good heat dissipation performance as set forth in claim 2, wherein: the outer wall of the surrounding wall is provided with a plurality of heat dissipation grooves in a penetrating mode along the circumferential direction of the surrounding wall, and the outer heat absorption layer is at least partially exposed out of the heat dissipation grooves.

4. The capacitor with good heat dissipation performance as set forth in claim 3, wherein: the radiating groove is vertically arranged on the outer wall of the surrounding wall.

5. The capacitor with good heat dissipation performance as recited in any one of claims 1 to 4, wherein: a mounting rack is arranged in the accommodating cavity; the lower end of the mounting frame is connected with the inner wall of the bottom of the containing cavity, a mounting groove is formed in the upper end of the mounting frame, and the lower end of the inner heat absorption layer is inserted into the mounting groove in a matched mode, so that the capacitor core is fixedly mounted in the containing cavity.

6. The capacitor with good heat dissipation performance as claimed in claim 5, wherein: the outer wall of the mounting rack is annularly hollowed out to form a plurality of hollowed-out grooves.

7. The capacitor with good heat dissipation performance as claimed in claim 5, wherein: the lower end of the mounting frame is dug to be provided with a clearance groove, and the upper end of the box body is accommodated in the clearance groove.

8. The capacitor with good heat dissipation performance as set forth in any one of claims 1-4, wherein: and a rubber plug is accommodated between the inner wall of the top of the accommodating cavity and the outer wall of the top of the heat dissipation silica gel sleeve.

9. The capacitor with good heat dissipation performance as recited in any one of claims 1 to 4, wherein: the inner heat absorption layer comprises a bottom layer and a wall layer vertically extending upwards along the edge of the bottom layer; the first heat absorption cavity is arranged in the bottom layer and the wall layer, the bottom layer supports the bottom of the heat dissipation silica gel sleeve, and the wall layer is sleeved outside the side wall of the heat dissipation silica gel sleeve.

10. The capacitor with good heat dissipation performance as recited in any one of claims 1 to 4, wherein: the outer heat-absorbing layer is annular and is sleeved on the side wall of the aluminum shell.

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