CN215299068U - Thin film type power capacitor - Google Patents

Abstract

The utility model discloses a film type power capacitor, which comprises a shell for packaging and a binding post arranged outside the shell, and also comprises a bus bar shell arranged in the shell and electrically connected with the binding post, a plurality of polar plates arranged in the bus bar shell at intervals in parallel and a clapboard arranged between two adjacent polar plates, wherein the polar plates are electrically connected with the bus bar shell; wherein, female arranging the casing and arranging including the female row of anodal and the female row of negative pole that parallel interval set up, and the female row of embedding negative pole of anodal forms the polar plate cavity, still be provided with the insulating part that is used for isolated positive pole/female arranging between female row of positive pole and the negative pole, the handing-over department of insulating part butt at the female row of positive pole/negative pole, and the insulating part is embedded to have a positive female assembly of arranging, positive female row assembly runs through insulating part and terminal and the female electric connection of arranging of anodal, one side of positive female row assembly is equipped with female assembly of arranging of burden, female assembly of burden arranges electric connection with terminal and the female row of negative pole.

Description

Thin film type power capacitor

Technical Field

The utility model belongs to the film capacitor field specifically is a film formula electric power electric capacity.

Background

With the increasing development of industrial technology, power capacitor technology is one of the hot spots of the technological development in the current industrial field. The technology of the internal structure of the capacitor is a very important technology for distinguishing the good and bad performance of the capacitor. Compared with the traditional film type power capacitor, the ESL of the capacitor is greatly reduced due to the symmetrical electrode on two sides and the structure of the internal positive busbar and the internal negative busbar.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a film formula electric power electric capacity for the problem of solution.

The purpose of the utility model can be realized by the following technical scheme:

a thin film type power capacitor comprises a shell for packaging, a binding post arranged on the outer side of the shell, a busbar shell arranged in the shell and electrically connected with the binding post, a plurality of polar plates arranged in the busbar shell in parallel at intervals and a partition plate arranged between two adjacent polar plates, wherein the polar plates are electrically connected with the busbar shell;

wherein the content of the first and second substances,

the female shell of arranging includes that parallel arrangement's anodal mother arranges and negative pole is female arranges, and the female tip embedding negative pole of arranging forms the polar plate cavity in female, it is used for isolated positive pole/female insulating part of arranging still to be provided with between female arranging of negative pole and the anodal, the insulating part butt is at female handing-over department of arranging of anodal/negative, wherein, the butt is female to be embedded at the insulating part of arranging one side of anodal and is equipped with the female assembly of arranging electric connection with anodal, one side of the female assembly of arranging of positive mother is equipped with the female assembly of arranging electric connection's of negative pole, and the female assembly of arranging of positive mother and negative mother all with terminal electric connection.

Further, the polar plate comprises a positive plate and a negative plate, and a separator is arranged between the positive plate and the negative plate;

Wherein the content of the first and second substances,

one end of the positive plate close to the positive busbar is provided with a sealing element for sealing a cavity of the positive plate, one end of the sealing element is sleeved at one end of the positive plate close to the positive busbar, and the other end of the sealing element is abutted against the positive busbar;

one end of the negative plate close to the negative busbar is provided with a sealing element for sealing a cavity of the negative plate, one end of the sealing element is sleeved at one end of the negative plate close to the negative busbar, and the other end of the sealing element is abutted against the negative busbar;

one end of the clapboard is fixedly connected with the cathode busbar, and the other end of the clapboard is fixedly connected with the anode busbar.

Further, all seted up the kidney slot on female arranging of anodal mother and the negative pole, and the kidney slot corresponds with the sealing member and sets up, and the sealing member is embedded to have first utmost point post and the second utmost point post that the symmetry set up, and the one end of first utmost point post and second utmost point post all runs through sealing member and positive/negative plate electric connection, and the other end welding of first utmost point post and second utmost point post is on female arranging of anodal/negative pole.

Furthermore, the binding posts are symmetrically arranged on two side surfaces of the shell in parallel.

Furthermore, the binding posts comprise positive binding posts and negative binding posts, and the positive binding posts and the negative binding posts arranged on the same side are alternately arranged;

Wherein the content of the first and second substances,

the positive wiring column is electrically connected with the positive busbar assembly, and the negative wiring column is electrically connected with the negative busbar assembly.

Furthermore, the shell is movably connected with a handle perpendicular to two side faces of the mounting binding post.

Furthermore, the shell is provided with a bolt hole for fixing the capacitor.

Furthermore, silk-screen patterns with the same number as the wiring terminals are printed on the end face of the shell in a silk-screen mode, and the silk-screen patterns correspond to the wiring terminals one to one.

Furthermore, a gap is formed between one end, close to the negative electrode busbar, of the positive plate and the negative electrode busbar.

Furthermore, a gap is formed between one end, close to the positive busbar, of the negative plate and the positive busbar.

Compared with the prior art, the beneficial effects of the utility model are that:

this application calls the symmetric distribution through electric capacity electrode overall arrangement, and the female different terminals of homopolar that indicate electric capacity of electrode connection is inside to adopt female row to be connected, reduces the ESL of electric capacity, and the handle is telescopic handle, and such handle can improve its space utilization, and the bottom of this application levels simultaneously, makes its radiating efficiency higher.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic side view of the present invention;

fig. 4 is a schematic cross-sectional view of the present invention;

fig. 5 is a schematic diagram of the bus bar structure of the present invention;

fig. 6 is a schematic diagram of the structure of the bus bar housing of the present invention.

In the figure: 1. a housing; 2. a busbar housing; 3. a positive busbar; 4. a negative busbar; 5. a kidney-shaped groove; 6. a handle; 7. a first pole column; 8. a second pole; 9. a positive plate; 10. a negative plate; 11. a partition plate; 12. a seal member; 13. a binding post; 14. a positive busbar assembly; 15. a negative busbar assembly; 16. an insulating member; 17. a plate chamber.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. 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.

Accordingly, the detailed description of the embodiments of the present invention provided in the following drawings is not intended to limit the scope of the claimed invention, but is merely representative of selected embodiments of the present invention.

Traditionally, in electric power and various electrical equipment, a film capacitor is widely applied to the type of capacitor which is usually applied to working conditions of high power, heavy current and the two physical impacts, and electrodes of the capacitor manufactured by the traditional structure and process are directly obtained by metalizing a single surface of a film, so that the current endurance capacity of the capacitor is difficult to reach 2 times of rated current and above, the capacitor is extremely easy to overload or heat, and finally, the rapid aging and damage of the capacitor are caused, even fire explosion and other serious consequences occur.

Based on the above description, the embodiment of the present invention provides a thin film power capacitor as shown in fig. 1-6, which includes a housing 1 for packaging and a terminal 13 disposed outside the housing 1, and is characterized by further including a busbar housing 2 disposed in the housing 1 and electrically connected to the terminal 13, a plurality of plates disposed in the busbar housing 2 at parallel intervals, and a partition 11 disposed between two adjacent plates, and the plates are electrically connected to the busbar housing 2; the busbar shell 2 comprises a positive busbar 3 and a negative busbar 4 which are arranged in parallel, the end of the positive busbar 3 is embedded into the negative busbar 4 to form a polar plate cavity 17, an insulating piece 16 used for isolating the positive/negative busbar is further arranged between the positive busbar 3 and the negative busbar 4, the insulating piece 16 is abutted to the joint of the positive/negative busbar, a positive busbar assembly 14 electrically connected with the positive busbar 3 is embedded into the insulating piece 16 abutted to one side of the positive busbar 3, a negative busbar assembly 15 electrically connected with the negative busbar 4 is arranged on one side of the positive busbar assembly 14, and the positive busbar assembly 14 and the negative busbar assembly 15 are both electrically connected with a binding post 13.

Symmetrical distribution is called through the capacitor electrode overall arrangement, and the electrode connection is female to be connected with adopting female arranging inside the different terminals of homopolar that indicate the electric capacity, reduces the ESL of electric capacity, and the bottom of this application is level and smooth simultaneously, makes its radiating efficiency higher.

The scheme is explained in detail in the following with the accompanying drawings;

referring to fig. 1 and 2, as shown in fig. 1-2, the terminals 13 are symmetrically disposed on two side surfaces of the housing 1 in parallel, and the terminals 13 include positive terminals and negative terminals, and the positive terminals and the negative terminals disposed on the same side are alternately disposed, bolt holes for fixing capacitors are disposed on the housing 1, and the capacitors can be fixed on the mounting surface, which is convenient for mounting.

Simultaneously, shell 1 perpendicular to installation terminal 13's both sides face swing joint has handle 6, specifically speaking, in the spacing pipe of handle 6 embedding, and stretch to the perpendicular form of spacing pipe behind the spacing pipe of tip embedding of handle 6, at utmost it is spacing with handle 6, spacing pipe welding is on shell 1 perpendicular to installation terminal 13's both sides face simultaneously, when using the handle, only need to imbed the spacing intraductal handle 6 pull out can, handle 6 through setting up the activity can make things convenient for the transportation transport of electric capacity on the one hand, on the other hand, handle 6 sets up to telescopic, can save the transportation, space during storage and use, promote economic benefits.

Referring to fig. 4, as shown in fig. 4, a busbar housing 2 is enclosed in the housing, wherein the busbar housing 2 is electrically connected to a terminal 13 installed on the housing 1, the thin film capacitor can be enclosed in the inner cavity by arranging the busbar housing 2, thereby preventing the performance of the housing 1 from being reduced due to electrolyte leakage caused by damage, meanwhile, the busbar housing 2 includes a positive busbar 3 and a negative busbar 4 which are arranged in parallel at intervals, the positive busbar 3 is embedded into the negative busbar 4 to form a plate chamber 17, and a short circuit caused by time contact arranged on the same side can be avoided by arranging the positive busbar 3 and the negative busbar 4 at intervals up and down;

referring to fig. 6, as shown in fig. 6, an insulating member 16 for isolating the positive/negative bus bar is further disposed between the positive bus bar 3 and the negative bus bar 4, the insulating member 16 abuts against the junction of the positive/negative bus bars, wherein a positive bus bar assembly 14 electrically connected to the positive bus bar 3 is embedded in the insulating member 16 abutting against one side of the positive bus bar 3, a negative bus bar assembly 15 electrically connected to the negative bus bar 4 is disposed on one side of the positive bus bar assembly 14, and the positive bus bar assembly 14 and the negative bus bar assembly 15 are both electrically connected to the binding post 13; can guarantee through setting up insulating part 16 that anodal female row 3 and female 4 contactless of arranging of negative pole, avoid contacting the back short circuit, still be provided with positive female assembly 14 of arranging in the insulating part 16 simultaneously, make positive female row assembly 14 roughly the same with the position of the female assembly 15 of burden arranging, realize positive contact post and positive female row assembly 14 electric connection, negative terminal and the female assembly 15 electric connection of arranging of burden, and the homonymy sets up, symmetrical distribution is called through the electric capacity electrode overall arrangement, the female different terminal of homopolarity that indicates electric capacity of female arranging of electrode connection is inside to adopt female arranging to be connected, reduce the ESL of electric capacity, promote the performance of electric capacity.

Referring to fig. 4, as shown in fig. 4, the busbar casing 2 is internally sealed with a polar plate and a separator 11, and more specifically, the polar plate includes a positive polar plate 9 and a negative polar plate 10, and the separator 11 is disposed between the positive polar plate 9 and the negative polar plate 10; one end of the positive plate 9, which is close to the positive busbar 3, is provided with a sealing element 12 for sealing the polar plate chamber 17 and the shell 1, one end of the sealing element 12 is sleeved at one end of the positive plate 9, which is close to the positive busbar 3, and the other end of the sealing element 12 is abutted against the positive busbar 3; a sealing element 12 for sealing the polar plate cavity 17 and the shell 1 is arranged at one end of the negative plate 10 close to the negative busbar 4, one end of the sealing element 12 is sleeved at one end of the negative plate 10 close to the negative busbar 4, and the other end of the sealing element 12 is abutted against the negative busbar 4; the preferable sealing element 12 can be a rubber plug or a sealing strip, the sealing element 12 can ensure that the electrolyte filled in the pole plate chamber 17 leaks when the pole plate is connected with the busbar, and can prevent external dust from entering the pole plate chamber 17 to cause the performance reduction of the capacitor, and meanwhile, the short circuit, the heating and the damage of the capacitor caused by conducting substances, such as water, in the pole plate chamber 17 can be avoided under an extreme environment;

the one end and the female 4 fixed connection of arranging of negative pole of baffle 11, the other end and the female 3 fixed connection of arranging of baffle 11 of arranging of positive pole, positive plate 9 are close to the female one end of arranging 4 of negative pole and arrange 4 between being equipped with the clearance of arranging of negative pole, and negative plate 10 is close to the female one end of arranging 3 of positive pole and is equipped with the clearance between arranging with the true utmost point, can guarantee the circulation of electrolyte in polar plate cavity 17 through setting up the clearance.

Referring to fig. 5, as shown in fig. 5, the positive busbar 3 and the negative busbar 4 are both provided with a kidney-shaped groove 5, the kidney-shaped groove 5 is disposed corresponding to the sealing element 12, and the area of the kidney-shaped groove 5 is smaller than the area of the sealing element 12, so that the sealing element 12 abutting against the positive busbar 3 or the negative busbar 4 is not squeezed into the kidney-shaped groove 5, and the sealing element 12 is slipped out of the plate chamber 17, meanwhile, the sealing element 12 is embedded with a first post 7 and a second post 8 which are symmetrically disposed, one end of the first post 7 and one end of the second post 8 both penetrate through the sealing element 12 and are electrically connected with the positive/negative plate 10, the other end of the first post 7 and the other end of the second post 8 are welded on the positive/negative busbar, and by disposing the first post 7 and the second post 8, reliable connection between the plate and the busbar can be ensured during high-power discharge or charge, and during specific implementation, all cover on two utmost point posts of first utmost point post 7 and second utmost point post 8 and scribble insulating material, like insulating tape etc. when preventing that shell 1 from warping, short circuit capacitance is connected with shell 1 to two utmost point posts of first utmost point post 7 and second utmost point post 8.

To sum up, this application calls the symmetric distribution through the electric capacity electrode overall arrangement, and the female arranging of electrode connection indicates that the same polarity of electric capacity different terminals is inside to adopt female arranging to be connected, reduces the ESL of electric capacity, and handle 6 is telescopic handle, and such handle can improve its space utilization, and the bottom of this application is leveled simultaneously, makes its radiating efficiency higher.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify 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 therefore 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 present invention, "a plurality" means two or more unless specifically limited otherwise.

The specific meaning of the above terms in the present invention can be understood in specific cases for a person of ordinary skill in the art; the preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. A film type power capacitor comprises a shell (1) for packaging and a binding post (13) arranged on the outer side of the shell (1), and is characterized by further comprising a busbar shell (2) which is arranged in the shell (1) and electrically connected with the binding post (13), a plurality of polar plates which are arranged in the busbar shell (2) at intervals in parallel and a partition plate (11) which is arranged between two adjacent polar plates, wherein the polar plates are electrically connected with the busbar shell (2);

Wherein the content of the first and second substances,

the bus bar shell (2) comprises a positive bus bar (3) and a negative bus bar (4) which are arranged in parallel, the end portion of the positive bus bar (3) is embedded into the negative bus bar (4) to form a polar plate cavity (17), an insulating piece (16) used for isolating the positive/negative bus bar is further arranged between the positive bus bar (3) and the negative bus bar (4), the insulating piece (16) is abutted to the joint of the positive/negative bus bar, wherein the insulating piece (16) abutted to one side of the positive bus bar (3) is embedded with a positive bus bar assembly (14) electrically connected with the positive bus bar (3), one side of the positive bus bar assembly (14) is provided with a negative bus bar assembly (15) electrically connected with the negative bus bar (4), and the positive bus bar assembly (14) and the negative bus bar assembly (15) are both electrically connected with a binding post (13).

2. A film-type power capacitor as claimed in claim 1, characterized in that the plates comprise a positive plate (9) and a negative plate (10), a separator (11) being provided between the positive plate (9) and the negative plate (10);

wherein the content of the first and second substances,

one end of the positive plate (9) close to the positive busbar (3) is provided with a sealing element (12) for sealing a polar plate chamber (17), one end of the sealing element (12) is sleeved at one end of the positive plate (9) close to the positive busbar (3), and the other end of the sealing element (12) is abutted against the positive busbar (3);

one end of the negative plate (10) close to the negative busbar (4) is provided with a sealing element (12) for sealing a polar plate cavity (17), one end of the sealing element (12) is sleeved at one end of the negative plate (10) close to the negative busbar (4), and the other end of the sealing element (12) is abutted against the negative busbar (4);

One end of the clapboard (11) is fixedly connected with the negative busbar (4), and the other end of the clapboard (11) is fixedly connected with the positive busbar (3).

3. The thin film type power capacitor as claimed in claim 2, wherein the positive busbar (3) and the negative busbar (4) are both provided with a kidney-shaped groove (5), the kidney-shaped groove (5) is provided corresponding to the sealing element (12), the sealing element (12) is embedded with a first pole (7) and a second pole (8) which are symmetrically arranged, one end of each of the first pole (7) and the second pole (8) penetrates through the sealing element (12) to be electrically connected with the positive/negative plate, and the other end of each of the first pole (7) and the second pole (8) is welded on the positive/negative busbar.

4. A film-type power capacitor as claimed in claim 1, characterized in that said terminals (13) are symmetrically arranged in parallel on both sides of the housing (1).

5. A film-type power capacitor as claimed in claim 4, characterized in that the terminals (13) comprise positive terminals and negative terminals, and the positive terminals and the negative terminals disposed on the same side are alternately disposed;

wherein the content of the first and second substances,

the positive wiring column is electrically connected with the positive busbar assembly (14), and the negative wiring column is electrically connected with the negative busbar assembly (15).

6. A film-type power capacitor as claimed in any one of claims 1 to 5 wherein said housing (1) is movably connected to a handle (6) at a position perpendicular to the sides of the mounting posts (13).

7. The film-type power capacitor as claimed in any one of claims 1-5, wherein the housing (1) is provided with bolt holes for fixing the capacitor.

8. A film-type power capacitor as claimed in any one of claims 1 to 5, characterized in that the end faces of the housing (1) are screen-printed with the same number of screen-printed patterns as the number of terminals (13), and the screen-printed patterns correspond to the terminals (13) one to one.

9. A film-type power capacitor as claimed in claim 2, wherein a gap is provided between one end of the positive plate (9) close to the negative busbar (4) and the negative busbar (4).

10. A thin film power capacitor as claimed in claim 2, wherein a gap is provided between the positive bus bar (3) and one end of the negative plate (10) close to the positive bus bar (3).

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