CN210443430U

CN210443430U - Integrated metallized polypropylene film capacitor

Info

Publication number: CN210443430U
Application number: CN201921826105.7U
Authority: CN
Inventors: 吴鑫; 黄晓峰
Original assignee: Techcap Capacitor Inc
Current assignee: Techcap Capacitor Inc
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-05-01
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses an integrated metallized polypropylene film capacitor, which comprises a metal shell; a film capacitor is arranged in the metal shell and comprises a capacitor body and a bus overcurrent bar; a capacitor body is arranged in the metal shell, a capacitor core is arranged in the capacitor body, and a connecting unit is arranged on the capacitor core and comprises a positive connecting sheet and a negative connecting sheet; the bus overcurrent bar is provided with a plurality of positive connecting terminals and a plurality of negative connecting terminals, and the positive connecting terminals and the negative connecting terminals are respectively connected with integrated positive connecting terminals and integrated negative connecting terminals; the bottom of metal casing is provided with the location mounting panel, be provided with shock-resistant structure between location mounting panel and the metal casing. The utility model provides a generating line overflows and is connected through linkage unit and integrated connecting terminal between row and the condenser core, overflows the generating line and arranges integrated to the condenser.

Description

Integrated metallized polypropylene film capacitor

Technical Field

The utility model relates to a condenser technical field specifically is an integrated form metallization polypropylene film capacitor.

Background

In high power electronic devices, thin film capacitors are widely used as energy storage elements for converting and controlling power. The power capacitor used on the rail vehicles such as urban light rails, subways, main railway locomotives and the like is required to have the technical characteristics of high voltage resistance, low self-inductance, small dielectric loss, high reliability, long average service life and the like, and also has better vibration resistance. However, the film capacitor is not outstanding in vibration resistance and cannot fully meet the requirements of practical application. Under the prior art condition, film capacitor is direct mount in the frame, owing to receive the restriction of spatial position can't install special damping device, leads to film capacitor long-term operation under the operational environment of vibration, consequently leads to the damage of condenser and connecting bus easily, and the female arranging of present condenser is inconvenient moreover, and the structure is loaded down with trivial details, and the volume is great, and manufacturing cost is higher.

Disclosure of Invention

An object of the utility model is to provide an integrated form metallization polypropylene film capacitor to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an integrated metallized polypropylene film capacitor comprising a metal case; a film capacitor is arranged in the metal shell and comprises a capacitor body and a bus overcurrent bar; a capacitor body is arranged in the metal shell, a capacitor core is arranged in the capacitor body, and a connecting unit is arranged on the capacitor core and comprises a positive connecting sheet and a negative connecting sheet; the bus overcurrent bar is provided with a plurality of positive connecting terminals and a plurality of negative connecting terminals, and the positive connecting terminals and the negative connecting terminals are respectively connected with integrated positive connecting terminals and integrated negative connecting terminals; the capacitor core and the bus overcurrent bar are correspondingly connected with the integrated positive connecting terminal and the integrated negative connecting terminal through the positive connecting sheet and the negative connecting sheet; the anti-seismic buffer structure comprises a metal shell, a positioning mounting plate, an anti-seismic structure and a plurality of anti-seismic buffer columns, wherein the positioning mounting plate is arranged at the bottom of the metal shell, the anti-seismic structure is arranged between the positioning mounting plate and the metal shell, the anti-seismic structure comprises two supporting pieces used for connecting the positioning mounting plate and the metal shell, and the anti-seismic buffer columns are arranged between the two supporting pieces; and a plurality of elastic sealing strips are arranged between the peripheral inner walls of the metal shell and the film capacitor at intervals.

Preferably, an elastic buffer net is connected between the anti-seismic buffer columns, so that the anti-seismic buffer columns are positioned, and the buffer performance of the anti-seismic buffer columns is further improved.

Preferably, a cavity formed between the positioning mounting plate and the metal shell is filled with a buffer material, so that the metal shell and the capacitor and the busbar in the metal shell are buffered to a certain extent.

Preferably, the surface of the busbar overflowing row is encapsulated with an epoxy resin potting material, so that a certain buffering effect is achieved.

Preferably, a heat conducting gasket is arranged on one surface, close to the film capacitor, of the elastic sealing strip, and is used for heat conducting and heat radiating of the film capacitor.

Preferably, the peripheral corners of the busbar overcurrent row are provided with a plurality of positioning mounting holes, so that the busbar overcurrent row can be conveniently mounted and positioned.

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

1. the utility model provides an integrated form metallization polypropylene film capacitor, the generating line overflows and arranges and connect through connection piece and connecting terminal between the condenser core, overflows the generating line and arranges integrated to the condenser inside, can effectual reduction in production cost, improves economic benefits.

2. The utility model provides an integrated form metallization polypropylene film capacitor, through setting up buffering, the anti-seismic performance that a plurality of elastic sealing strip that the interval set up between bradyseism structure and metal casing and the film capacitor of metal casing bottom has all effectually improved metal casing, overflow row and the effect that the condenser core played the protection to generating line in the metal casing, prevent that film capacitor long-term operation from causing condenser core and generating line to overflow the damage of arranging under the operational environment of vibration.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is the structure diagram of the bus overcurrent row of the utility model.

In the figure: 1. a metal housing; 2. a thin film capacitor; 3. a bus overcurrent bar; 4. a capacitor core; 5. a positive electrode connecting sheet; 6. a negative electrode connecting sheet; 7. an integrated positive connection terminal; 8. an integrated negative connection terminal; 9. positioning the mounting plate; 10. a support member; 11. an anti-seismic buffer column; 12. an elastic sealing strip; 13. an elastic buffer net; 14. a thermally conductive gasket; 15. positioning the mounting hole; 16. a positive electrode connection terminal; 17. and a negative electrode connection terminal.

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 only 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.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", 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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution: an integrated metallized polypropylene film capacitor comprises a metal shell 1; a film capacitor 2 is arranged in the metal shell 1, and the film capacitor 2 comprises a capacitor body and a bus overcurrent bar 3; a capacitor body is arranged in the metal shell 1, a capacitor core 4 is arranged in the capacitor body, and a connecting unit is arranged on the capacitor core 4 and comprises a positive connecting sheet 5 and a negative connecting sheet 6; the bus overcurrent bar 3 is provided with a plurality of positive connecting terminals 16 and a plurality of negative connecting terminals 17, and the positive connecting terminals 16 and the negative connecting terminals 17 are respectively connected with an integrated positive connecting terminal 7 and an integrated negative connecting terminal 8; the capacitor core 4 and the bus overflow bar 3 are correspondingly connected with an integrated positive connecting terminal 7 and an integrated negative connecting terminal 8 through a positive connecting sheet 5 and a negative connecting sheet 6; the bottom of the metal shell 1 is provided with a positioning mounting plate 9, an anti-seismic structure is arranged between the positioning mounting plate 9 and the metal shell 1, the anti-seismic structure comprises two supporting pieces 10 used for connecting the positioning mounting plate 9 and the metal shell 1, and a plurality of anti-seismic buffer columns 11 are arranged between the two supporting pieces 10; a plurality of elastic sealing strips 12 are arranged between the peripheral inner wall of the metal shell 1 and the film capacitor 2 at intervals.

Further, an elastic buffer net 13 is connected between the anti-seismic buffer columns 11.

Further, a cavity formed between the positioning and mounting plate 9 and the metal shell 1 is filled with a buffer material.

Further, the surface of the busbar overflowing row 3 is encapsulated with potting epoxy resin.

Further, a heat conductive gasket 14 is provided on a side of the elastic sealing tape 12 adjacent to the film capacitor 2.

Furthermore, the peripheral corners of the busbar overcurrent row 3 are provided with a plurality of positioning and mounting holes 15.

The working principle is as follows: when the film capacitor 2 is installed, only the positive connecting piece 5 and the negative connecting piece 6 arranged on the capacitor core 4 are correspondingly connected with the integrated positive connecting terminal 7 and the integrated negative connecting terminal 7 arranged on the bus overcurrent bar 3, and each positive connecting terminal 16 and each negative connecting terminal 17 are not required to be connected, so that the film capacitor is small in size, simple to operate and space-saving; and then connected with the frame through the positioning mounting plate 9. Because long-term operation is in the operational environment of vibration, when it shakes in the in-process of using, the antidetonation structure between metal casing 1 that film capacitor 2 outside cover was established and location mounting panel 9 plays the effect of supporting and location through support piece 9 to metal casing 1, all play antidetonation, the effect of buffering to metal casing 1 through the elasticity buffering net 13 that is connected between antidetonation buffering post 11 and the antidetonation buffering post 11, and the effect of location is played to film capacitor 2 to elastic sealing strip 12 that sets up between the inner wall of metal casing 1 and film capacitor 2, the embedment thing epoxy resin of the surface embedment of bus overcurrent row further reduces film capacitor 2's vibration, prevent that film capacitor 2 from operating under the operational environment of vibration for a long time, cause condenser core 4 and bus overcurrent row 3's damage.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An integrated metallized polypropylene film capacitor, comprising: comprising a metal housing (1); a film capacitor (2) is arranged in the metal shell (1), and the film capacitor (2) comprises a capacitor body and a bus overcurrent bar (3); a capacitor body is arranged in the metal shell (1), a capacitor core (4) is arranged in the capacitor body, and a connecting unit is arranged on the capacitor core (4) and comprises a positive connecting sheet (5) and a negative connecting sheet (6); the bus overcurrent bar (3) is provided with a plurality of positive connecting terminals (16) and a plurality of negative connecting terminals (17), and the positive connecting terminals (16) and the negative connecting terminals (17) are respectively connected with integrated positive connecting terminals (7) and integrated negative connecting terminals (8); the capacitor core (4) and the bus overcurrent bar (3) are correspondingly connected with an integrated positive connecting terminal (7) and an integrated negative connecting terminal (8) through a positive connecting sheet (5) and a negative connecting sheet (6); a positioning mounting plate (9) is arranged at the bottom of the metal shell (1), an anti-seismic structure is arranged between the positioning mounting plate (9) and the metal shell (1), the anti-seismic structure comprises two supporting pieces (10) used for connecting the positioning mounting plate (9) and the metal shell (1), and a plurality of anti-seismic buffer columns (11) are arranged between the two supporting pieces (10); a plurality of elastic sealing strips (12) are arranged between the peripheral inner walls of the metal shell (1) and the film capacitor (2) at intervals.

2. An integrated metallized polypropylene film capacitor as claimed in claim 1 wherein: and an elastic buffer net (13) is connected between the anti-seismic buffer columns (11).

3. An integrated metallized polypropylene film capacitor as claimed in claim 1 wherein: and a cavity formed between the positioning mounting plate (9) and the metal shell (1) is filled with a buffer material.

4. An integrated metallized polypropylene film capacitor as claimed in claim 1 wherein: and the surface of the bus overflowing row (3) is encapsulated with an encapsulating epoxy resin.

5. An integrated metallized polypropylene film capacitor as claimed in claim 1 wherein: and a heat conducting gasket (14) is arranged on one surface of the elastic sealing strip (12) close to the film capacitor (2).

6. An integrated metallized polypropylene film capacitor as claimed in claim 1 wherein: the bus overflow bar is characterized in that a plurality of positioning mounting holes (15) are formed in the corners of the periphery of the bus overflow bar (3).