CN211208245U

CN211208245U - Capacitor device and frequency converter

Info

Publication number: CN211208245U
Application number: CN201922496072.0U
Authority: CN
Inventors: 江传烈; 欧康喜
Original assignee: Shenzhen Invt Electric Co Ltd
Current assignee: Shenzhen Invt Electric Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-07
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a capacitor device, include: a capacitor including a capacitor body and a terminal electrode; the fixing component is sleeved on the first part of the capacitor body and used for fixing the capacitor; the heat conduction sleeve wraps the second part of the capacitor body and is used for transferring heat generated by the capacitor; the first part is close to the wiring terminal electrode of the capacitor, the second part is far away from the wiring terminal electrode of the capacitor, and the heat conduction sleeve and the fixing component are used for being matched with a mounting piece in a case cavity to fix the capacitor. Through implementing this embodiment, the heat conduction cover wraps up in the electric capacity body, utilizes the heat that the heat conduction cover transmission electric capacity produced to thereby cooperate fixed electric capacity through the installed part in fixed subassembly and heat conduction cover and the quick-witted case cavity, can improve the radiating effect of electric capacity, the assembly is nimble convenient.

Description

Capacitor device and frequency converter

Technical Field

The utility model relates to an electric capacity technical field especially relates to an electric capacity device and converter.

Background

The high protection frequency converter is suitable for the environment of comparatively abominable application. The capacitor is used as an important component of the frequency converter, and plays roles in filtering, storing energy and the like. For a high-power frequency converter, a bolt capacitor is usually adopted to realize the function on a circuit. The conventionally used bolt capacitor is composed of a body 1, a terminal electrode 2 and an insulating sleeve 3, as shown in figure 1. The insulating sleeve wraps the body and plays an insulating role. The conventional mode can only be used for internal sealing if being applied to a high-protection high-power frequency converter, and has the problems of large heating of a capacitor, influence on service life and the like.

In the prior art, another solution is proposed. As shown in fig. 2, a plastic sleeve 4 is designed, and the middle of the plastic sleeve is connected with the capacitor body 1 through a sealant 5, and the plastic sleeve can be placed in a heat dissipation air duct in this way, so that the heat dissipation performance of the capacitor body 1 can be ensured, and a high protection effect can be realized. However, there are two disadvantages: one is that the capacitor body 1 is transmitted to the outside for heat dissipation after passing through two media, namely the sealant 5 and the plastic part, and the heat conductivity coefficient of the two media is poor, so that the heat dissipation performance of the capacitor is worse than that of the conventional bolt capacitor; the other point is that the square is designed for preventing rotation or fool-proofing during assembly, and the mode can lead to large occupied product space and is not beneficial to the miniaturization development of products.

SUMMERY OF THE UTILITY MODEL

The utility model provides a capacitance device and converter aims at solving among the correlation technique electric capacity radiating effect poor, and it is inconvenient to assemble, the bulky technical problem of product.

The utility model provides a capacitor device, it includes: a capacitor including a capacitor body and a terminal electrode; the fixing component is sleeved on the first part of the capacitor body and used for fixing the capacitor; the heat conduction sleeve wraps the second part of the capacitor body and is used for transferring heat generated by the capacitor; the first part is close to the wiring terminal electrode of the capacitor, the second part is far away from the wiring terminal electrode of the capacitor, and the heat conduction sleeve and the fixing component are used for being matched with a mounting piece in a case cavity to fix the capacitor.

Further, the heat conducting sleeve comprises a heat conducting sleeve body and a second mounting portion, the heat conducting sleeve body is matched with the second part of the capacitor body in shape so as to wrap the second part of the capacitor body, and the opening end of the heat conducting sleeve body in the direction towards the fixing component protrudes outwards to form the second mounting portion; the fixed subassembly is the clamp, be equipped with first installation department on the clamp, first installation department with the second installation department cooperatees in order to fix electric capacity.

Further, the bottom of second installation department is equipped with the portion of the sword of a sword, the portion of the sword of a sword is used for sealed machine case cavity.

Further, the clamp adopts the plastic part to make, on the first installation department and be located with the second installation department corresponds the assembly department and is equipped with the edge, in order to compress tightly heat conduction sleeve.

Further, the clamp is made of steel plate section bars.

Further, the first part of the capacitor body is wrapped with an insulating sleeve.

Further, the heat conduction sleeve is made of heat conduction silica gel.

The utility model also provides a converter, it includes: the heat dissipation device comprises a case, wherein the case is divided into a cavity and a heat dissipation channel, an installation part for installing a capacitor device is arranged in the cavity, the capacitor device is the capacitor device, and the capacitor device is matched with the installation part through the heat conduction sleeve and the fixing component to fix the capacitor.

Further, the installed part includes backing plate and double-screw bolt, the double-screw bolt is located on the backing plate, be equipped with on the backing plate and be used for spacingly the locating hole of the terminal electrode of electric capacity, first installation department with all be equipped with on the second installation department with double-screw bolt matched with mounting hole, the terminal electrode of electric capacity passes the locating hole, just the double-screw bolt passes first installation department with on the second installation department the mounting hole, in order to incite somebody to action electric capacity is fixed on the installed part.

Further, the installed part is for being equipped with the open-ended mounting panel, first installation department with the second installation department and all be equipped with the mounting hole on the mounting panel, the mounting panel cover is established on the electric capacity body, and with the bottom of second installation department offsets, through the screw with the mounting hole assembly is in order to incite somebody to action electric capacity is fixed on the installed part.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a heat conduction cover wraps up in electric capacity body, utilizes the heat that heat conduction cover transmission electric capacity produced to thereby cooperate fixed electric capacity through the installed part in fixed subassembly and heat conduction cover and the quick-witted case cavity, can improve the radiating effect of electric capacity, the assembly is nimble convenient, reduces the product volume.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic diagram of a prior art capacitive device;

FIG. 2 is another schematic diagram of a prior art capacitive device;

fig. 3 is a schematic diagram of a capacitor device according to an embodiment of the present invention;

fig. 4 is a schematic partial enlarged view of a section a-a of a capacitor device according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating an assembly of a heat conductive sleeve and a fixing component of a capacitor device according to an embodiment of the present invention;

fig. 6 is a schematic view illustrating an assembly of a heat conductive sleeve and a fixing member of a capacitor device according to another embodiment of the present invention;

fig. 7 is a schematic view of an assembly of a capacitor device and a mounting member according to an embodiment of the present invention;

fig. 8 is an enlarged partial view of a section B-B of a capacitor assembly assembled with a mounting member according to another embodiment of the present invention;

fig. 9 is a schematic view illustrating an assembly of a capacitor device and a mounting member according to another embodiment of the present invention.

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 some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 3 to 5, an embodiment of a capacitor device 100 provided by the present invention is shown. The capacitor device 100 is configured to be installed in a chassis, the chassis is divided into a cavity and a heat dissipation channel, the cavity is used for installing a circuit module, the heat dissipation channel is used for dissipating heat of the circuit module in the cavity, and a mounting member 30 is disposed in the cavity of the chassis, as shown in fig. 7, the mounting member 30 is used for installing the capacitor device 100. As shown in fig. 3 to 5, the capacitor device 100 includes a capacitor 50, a fixing element 10 and a heat conductive sleeve 20, wherein the capacitor 50 includes a capacitor body 1 and a terminal post electrode 2, and the fixing element 10 is sleeved on a first portion 6 of the capacitor body 1 for fixing the capacitor 50; the heat conducting sleeve 20 is wrapped on the second part 7 of the capacitor body 1 and used for transferring heat generated by the capacitor; wherein the first part 6 is close to the terminal electrode 2 of the capacitor, the second part 7 is far from the terminal electrode 2 of the capacitor, and the heat conduction sleeve 20 and the fixing component 10 are used for cooperating with a mounting part 30 in the cavity of the case to fix the capacitor. Wherein, the terminal post electrodes 2 are positive and negative electrodes electrically connected with the capacitor. The outer side surface of the capacitor body 1 is made of aluminum materials and is good in heat conduction performance. Through implementing this embodiment, utilize heat conduction sleeve 20 and fixed subassembly 10 and the assembly of installed part 30 in the quick-witted case cavity, can improve the radiating effect of electric capacity, the assembly is nimble convenient, and the protective effect is high.

Compared with the existing capacitor device 100, the capacitor device is wrapped by the insulating sleeve 3 or the plastic sleeve, which has poor heat conductivity coefficient and poor heat dissipation effect, and the embodiment employs the heat conducting sleeve 20 for wrapping. In a specific implementation, the heat conductive sleeve 20 is made of heat conductive silicone, which has a large heat conductivity coefficient and also has the characteristics of conventional silicone, such as water resistance, aging resistance, corrosion resistance, and the like. The heat conducting sleeve 20 is tightly sleeved with the capacitor body 1, so that the heat generated by the capacitor body 1 can be rapidly transferred to the outside, and the heat dissipation characteristic of the capacitor is improved.

In this embodiment, the first portion 6 of the capacitor body 1 is wrapped by the insulating sleeve 3, and the insulating sleeve 3 is tightly attached to the capacitor body 1. Because the circuit module is arranged in the cavity and a large number of charged bodies exist, the capacitor body 1, the fixing component 10 and the rest charged bodies are separated by the insulating sleeve 3, the insulating property of the capacitor body is ensured, and the safety is improved.

In an embodiment, the heat conductive sleeve 20 includes a heat conductive sleeve body 21, a second mounting portion 22 and a collar portion 23, the heat conductive sleeve body 21 is adapted to the second portion 7 of the capacitor body 1 to wrap the second portion 7 of the capacitor body 1, the heat conductive sleeve body 21 protrudes outward toward an opening end of the fixing component 10 to form the second mounting portion 22, and the collar portion 23 is disposed at a bottom of the second mounting portion 22.

In a specific embodiment, the wall thickness of the heat-conducting sleeve body 21 is 0.8-1.2 mm, so as to ensure the heat dissipation performance. In order to secure the compression strength of the heat conductive sleeve 20, the thickness of the second mounting portion 22 is greater than the thickness of the heat conductive sleeve body 21, thereby providing high strength when the heat conductive sleeve 20 is compressed with the mounting member 30. In addition, the second mounting portion 22 is stepped, and the inner side of the step is used for limiting the fixing assembly 10. The jaw 23 at the bottom of the second mounting portion 22 is used for being attached to the surface of the mounting member 30, so that external water, dust and other media are prevented from entering the cavity. The second mounting portion 22 is provided with a plurality of external mounting support surfaces, such as three external mounting support surfaces, and each of the external mounting support surfaces is provided with a mounting hole for being matched with the fixing component 10 for assembly.

In a specific embodiment, the fixing component 10 is a clamp, a first installation part 11 is arranged on the clamp, and the first installation part 11 and the second installation part 22 are matched to fix the capacitor. The first mounting portion 11 and the second mounting portion 22 are correspondingly disposed, for example, the first mounting portion 11 is also correspondingly provided with a plurality of external support surfaces, such as three external support surfaces, and each support surface is provided with a mounting hole for being matched with the heat conducting sleeve 20 for assembly.

In the embodiment shown in fig. 5, the clamp band is made of plastic, and an edge 12 is provided on the first mounting portion 11 at the corresponding assembling position with the second mounting portion 22 to compress the heat conductive sleeve 20. The clamp is integrated into one piece's cyclic annular not confined plastic part, and its annular edge is equipped with the flange to better with the laminating of second installation department 22, its not closed department is equipped with locking mechanism, the clamp cover is established the first part 6 of electric capacity body 1 assembles with locking mechanism through screw and nut, thereby will the clamp locking. The edge 12 on the first installation part 11 provides pressing force when the first installation part 11 and the second installation part 22 are assembled, so that the heat conduction sleeve 20 is more effectively pressed, and a higher protection effect is achieved. This configuration is suitable for higher protection class capacitor devices 100.

In the embodiment shown in fig. 6, the clamp band is made of a steel plate profile. The first installation part 11 on the clamp corresponds to the second installation part 22, and a plurality of corresponding external support surfaces are arranged on the first installation part 11, such as three external support surfaces. The clamp in this embodiment is made of a steel plate section, and because of the limitation of the manufacturing process of the plate, compared with a clamp made of a plastic part, the clamp has only three supporting surfaces on the action surface capable of pressing the heat-conducting sleeve 20, and the structural mode is suitable for products with lower protection requirements.

The embodiment of the utility model provides a wrap up in electric capacity body 1 through heat conduction cover 20, utilize the heat that heat conduction cover 20 transmission electric capacity produced to thereby cooperate fixed electric capacity through the installed part 30 in fixed subassembly 10 and heat conduction cover 20 and the quick-witted case cavity, can improve the radiating effect of electric capacity, the assembly is nimble convenient.

Referring to fig. 7 to 9, an embodiment of the present invention further provides a frequency converter, the frequency converter includes a case, the case is divided into a cavity and a heat dissipation channel, an installation component 30 for installing a capacitor device 100 is disposed in the cavity, the capacitor device 100 is the capacitor device 100 according to the above embodiment, the capacitor device 100 passes through the heat conduction sleeve 20 and the fixing component 10 and the installation component 30 cooperate to fix the capacitor. The cavity is used for mounting the circuit module, and the heat dissipation channel is used for dissipating heat of the circuit module in the cavity. Through implementing this embodiment, utilize heat conduction sleeve 20 and fixed subassembly 10 and the assembly of installed part 30 in the quick-witted case cavity, can make the electric capacity arrange heat dissipation channel in, can improve the radiating effect of capacitor body 1, can realize the high protection of electric capacity again, and the installation is nimble convenient, reduces the product volume.

In an embodiment, the mounting part 30 includes a backing plate 31 and a stud 32, the stud 32 is disposed on the backing plate 31, the backing plate 31 is provided with a positioning hole 33 for limiting the terminal electrode 2 of the capacitor, the second mounting part 22 and the first mounting part 11 are provided with mounting holes matched with the stud 32, the terminal electrode 2 of the capacitor passes through the positioning hole 33, and the stud 32 passes through the second mounting part 22 and the first mounting part 11 are provided with the mounting holes, so that the capacitor is fixed on the mounting part 30. Specifically, the backing plate 31 is provided with three studs 32 corresponding to three external support surfaces of the second mounting portion 22 and the first mounting portion 11, the height of the studs 32 is slightly higher than that of the second mounting portion 22 of the heat conductive sleeve 20, and the studs 32 are assembled with the mounting holes, so that the capacitor is assembled on the mounting member 30.

In an embodiment, the installed part 30 is for being equipped with the open-ended mounting panel, the second installation department 22 with first installation department 11 and all be equipped with the mounting hole on the mounting panel, the mounting panel cover is established on the electric capacity body 1, and with the bottom of second installation department 22 offsets, through screw 34 with the mounting hole assembly is in order to incite somebody to action the electric capacity is fixed to on the installed part 30. Specifically, the second installation department 22 with first installation department 11 and during the mounting panel assembly, through first installation department 11 is right the packing force is applyed to second installation department 22, makes the sword portion 23 of second installation department 22 bottom with the mounting panel tightly laminates to block the medium entering intracavity in the radiating air duct, reach the guard effect. Therefore, the first part 6 of the capacitor is arranged in the cavity of the case, and the second part 7 of the capacitor is arranged in the heat dissipation channel of the case, so that high protection of the capacitor is realized, and the heat dissipation performance of the capacitor is ensured.

The embodiment of the utility model provides a pass through heat conduction cover 20 with fixed subassembly 10 with installed part 30 cooperatees in order to fix electric capacity can make electric capacity arrange heat dissipation channel in, can improve electric capacity body 1's radiating effect, can realize the high protection of electric capacity again, and the installation is nimble convenient, reduces the product volume.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A capacitive device, comprising:

a capacitor including a capacitor body and a terminal electrode;

the fixing component is sleeved on the first part of the capacitor body and used for fixing the capacitor;

the heat conduction sleeve wraps the second part of the capacitor body and is used for transferring heat generated by the capacitor;

the first part is close to the wiring terminal electrode of the capacitor, the second part is far away from the wiring terminal electrode of the capacitor, and the heat conduction sleeve and the fixing component are used for being matched with a mounting piece in a case cavity to fix the capacitor.

2. The capacitor device according to claim 1, wherein the heat conductive sleeve comprises a heat conductive sleeve body and a second mounting portion, the heat conductive sleeve body is adapted to the second portion of the capacitor body to wrap the second portion of the capacitor body, and an opening end of the heat conductive sleeve body in the direction of the fixing component protrudes outward to form the second mounting portion;

the fixed subassembly is the clamp, be equipped with first installation department on the clamp, first installation department with the second installation department cooperatees in order to fix electric capacity.

3. A capacitor device according to claim 2, wherein the second mounting portion has a collar at a bottom thereof, the collar being adapted to seal the cavity of the case.

4. A capacitor device according to claim 3, wherein the clamp is made of plastic, and the first mounting portion is provided with an edge at a position corresponding to the second mounting portion for pressing the heat conductive sleeve.

5. A capacitor assembly as claimed in claim 3, wherein the clamp is formed from sheet steel.

6. A capacitor arrangement according to any of claims 2 to 5, wherein the first portion of the capacitor body is surrounded by an insulating sleeve.

7. The capacitive device of claim 6 wherein the thermally conductive sleeve is made of thermally conductive silicone.

8. A frequency converter, comprising: the case is divided into a cavity and a heat dissipation channel, a mounting piece for mounting a capacitor device is arranged in the cavity, the capacitor device is the capacitor device according to any one of claims 2-7, and the capacitor device is matched with the mounting piece through the heat conduction sleeve and the fixing component to fix the capacitor.

9. The frequency converter according to claim 8, wherein the mounting member comprises a base plate and a stud, the stud is arranged on the base plate, a positioning hole for limiting a terminal electrode of the capacitor is arranged on the base plate, mounting holes matched with the stud are arranged on the first mounting portion and the second mounting portion, the terminal electrode of the capacitor penetrates through the positioning hole, and the stud penetrates through the mounting holes on the first mounting portion and the second mounting portion so as to fix the capacitor onto the mounting member.

10. The frequency converter according to claim 8, wherein the mounting member is a mounting plate provided with an opening, the first mounting portion, the second mounting portion and the mounting plate are provided with mounting holes, the mounting plate is sleeved on the capacitor body and abuts against the bottom of the second mounting portion, and the mounting plate is assembled with the mounting holes through screws so as to fix the capacitor to the mounting member.