CN203415415U

CN203415415U - Capacitor

Info

Publication number: CN203415415U
Application number: CN201320401093.XU
Authority: CN
Inventors: 郭培囵; 王秀玲; 付颖颖; 王守超
Original assignee: Beijing Kejiaxin Capacitor Research Institute
Current assignee: CITIC Kejiaxin Beijing Electrical Technology Research Institute Co Ltd
Priority date: 2013-07-05
Filing date: 2013-07-05
Publication date: 2014-01-29
Anticipated expiration: 2023-07-05

Abstract

The utility model discloses a capacitor. Mainly aiming at disadvantages of an existing capacitor, the capacitor is designed, wherein the disadvantages comprise that heat is high and heat dissipation is poor. The capacitor comprises a shell. A plurality of cylindrical capacitor cores are arranged in the shell. Two ends of each capacitor core form an extraction electrode. An upper composite busbar and a lower composite busbar are also comprised. The plurality of capacitor cores are arranged between the upper composite busbar and the lower composite busbar side by side. Each composite busbar possesses an upper layer pole plate and a lower layer pole plate and the two layers of the pole plates are arranged in an insulation mode. In the plurality of capacitor cores, an upper electrode of parts of the capacitor cores is connected with one pole plate of the upper composite busbar and a lower electrode is connected with one pole plate of the lower composite busbar. An upper electrode of another part of the capacitor cores is connected with the other pole plate of the upper composite busbar and a lower electrode is connected with the other pole plate of the lower composite busbar. By using the capacitor of the utility model, an inductance of an outgoing line is effectively reduced; heat dissipation performance is good; a service life of a product is prolonged; a modular design is convenient.

Description

Capacitor

Technical field

The utility model relates to a kind of capacitor.

Background technology

Existing capacitor comprises the capacitor body that holds electric charge, also comprise two lead-out wires that form from a side of capacitor body, further, by fixing and mounting bracket, capacitor body is carried out to parallel connection, yet this capacitor lead-out wire inductance is larger, CURRENT DISTRIBUTION is inhomogeneous, through-flow larger element will generate heat seriously, and heat can not dissipate fast, cause heat in localized accumulated, easily cause the thermal breakdown of certain capacitor body and cause whole capacitor to lose efficacy, its fixing and mounting bracket using when in parallel takes up room greatly, higher to drain on manpower and material resources.

Utility model content

For the problems referred to above, the utility model provides a kind of capacitor of few good heat dissipation of generating heat.

For achieving the above object, the utility model capacitor, comprise housing, in described housing, be provided with a plurality of cylindrical condenser fuses, the two ends of capacitor body are formed with extraction electrode from middle part, also comprise upper and lower two composite bus bars, described a plurality of capacitor bodies are arranged side by side between upper and lower two busbars; Wherein,

Each described composite bus bar has upper and lower two-layer pole plate, and between two-layer pole plate, insulation arranges;

In described a plurality of capacitor bodies, the top electrode of partition capacitance device fuse connects upper pole plate of composite bus bar, and bottom electrode connects a pole plate of lower composite bus bar; The top electrode of another part capacitor body connects upper another pole plate of composite bus bar, and bottom electrode connects another pole plate of lower composite bus bar;

The exit of capacitor drawn and forms by each pole plate in same one end.

Especially, in the middle of described upper and lower composite bus bar, a side is provided with the busbar flank perpendicular to described pole plate, and described exit is positioned at one end of flank.

Especially, convex with the fixed strip that is no less than on described housing, described fixed strip is provided with the outside groove of opening direction along its length.

Especially, described groove cross section is Ω type.

Especially, described groove cross section is trumpet type.

Especially, on described housing, be provided with fin.

The utility model has been realized following beneficial effect:

The utility model is by effectively having reduced the inductance of lead-out wire, and employing composite bus bar exit is to connect and can make being more evenly distributed of electric current from core group middle part; Composite bus bar sectional area is large, and resistance value is little, has reduced circuit heating, and the heat exchange block thermal diffusivity of composite bus bar is good; The capacitor of this structure of the utility model has reduced heat production simultaneously and has improved heat dispersion, has extended the useful life of product, and is convenient to modularized design.

Accompanying drawing explanation

Fig. 1 is the cutaway view of the utility model capacitor embodiment 1;

Fig. 2 is the front view of the utility model capacitor embodiment 2;

Fig. 3 is the partial enlarged drawing of composite bus bar and capacitor body in the utility model capacitor embodiment 1;

Fig. 4 is the plane outspread drawing of composite bus bar in the utility model capacitor embodiment 2;

Fig. 5 is the end view of the utility model capacitor embodiment 3;

Fig. 6 is the vertical view of the utility model capacitor embodiment 3;

Fig. 7 is the connection diagram of the utility model capacitor embodiment 3;

Fig. 8 is the partial enlarged drawing of connector in the utility model capacitor embodiment 3

Fig. 9 is the partial enlarged drawing of connector in the utility model capacitor embodiment 4

Figure 10 is the outside drawing of the utility model capacitor embodiment 5.

Embodiment

Below in conjunction with Figure of description, the utility model is further described.

Embodiment 1:

As shown in Fig. 1 and 3, the utility model capacitor, comprise housing 5, in described housing 5, be provided with 4 cylindrical condenser fuses 2, the two ends of capacitor body 2 are formed with extraction electrode top electrode 21 and bottom electrode 22 from middle part, also comprise upper and lower two composite bus bar 1(3), described a plurality of capacitor bodies 2 are arranged side by side between upper and lower two busbars; Wherein,

Described upper composite bus bar 1 has upper strata pole plate 11Yu lower floor pole plate 12, and lower composite bus bar 3 has upper strata pole plate 31Yu lower floor pole plate 32, and between two-layer pole plate, insulation arranges;

In described a plurality of capacitor bodies, the top electrode 21 of first capacitor body and the 3rd capacitor body is connected composite bus bar upper strata pole plate 11, and bottom electrode 22 connects lower floor's pole plate 32 of lower composite bus bar 3; The top electrode 21 of second capacitor body and the 4th capacitor body is connected composite bus bar lower floor pole plate 12, and bottom electrode 22 connects the upper strata pole plate 31 of lower composite bus bar;

The exit 41(42 of capacitor drawn and forms by each pole plate in same one end).

The present embodiment adopts composite bus bar shunt capacitor, with the effect that replaces going between in existing capacitor, adopts the inductance of composite bus bar little more a lot of than lead-in wire, thereby has effectively reduced capacitor heating.

Embodiment 2:

As shown in Fig. 2 and 4, described in the present embodiment, capacitor body is identical with embodiment 1 with the connection of composite bus bar, difference be described upper and lower composite bus bar in the middle of a side be provided with the busbar flank 4 perpendicular to described pole plate, described exit 41(42) be positioned at one end of busbar flank; Upper composite bus bar 12 have vertically to upper composite bus bar flank, described lower composite bus bar have vertically to lower composite bus bar flank; Described upper composite bus bar flank end is provided with the anodal exit 41 of upper composite bus bar and upper composite bus bar negative pole exit 42 that is connected to composite bus bar upper strata pole plate 11Yu Shang composite bus bar lower floor pole plate 12; Described lower composite bus bar flank end is provided with the anodal exit of lower composite bus bar and the lower composite bus bar negative pole exit that is connected to lower composite bus bar upper strata pole plate 31Yu Xia composite bus bar lower floor pole plate 32.

By setting up flank for composite bus bar, be convenient to draw the positive/negative plate of composite bus bar, facilitate modularized design, make capacitor package compacter.

Embodiment 3:

As shown in Fig. 5,6,7 and 8, the present embodiment capacitor internal structure is identical with embodiment 2, and difference is, convexes with the fixed strip that is no less than on described housing, described fixed strip is provided with the outside groove of opening direction along its length, and described groove cross section is Ω type.

A plurality of housings can be realized connection or the dismounting with connector 53 by described groove, thereby make installation and removal convenient and easy.

Embodiment 4:

As shown in Fig. 5,6,7 and 9, the present embodiment capacitor internal structure is all similar to embodiment 3 to shell, and difference is only, described groove cross section is tubaeform.

Embodiment 5:

As shown in figure 10, the present embodiment capacitor internal structure is identical with embodiment 2, and difference is to be provided with fin 51 on described housing 5.

The heat dispersion that fin has improved product is set on shell, has extended the useful life of product.

Above; it is only preferred embodiment of the present utility model; but protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range that claim was defined.

Claims

1. a capacitor, comprise housing, in described housing, be provided with a plurality of cylindrical condenser fuses, the two ends of capacitor body are formed with extraction electrode from middle part, it is characterized in that, also comprise upper and lower two composite bus bars, described a plurality of capacitor bodies are arranged side by side between upper and lower two busbars; Wherein,

The exit of capacitor drawn and forms by each pole plate in same one end.

2. capacitor as claimed in claim 1, is characterized in that, in the middle of described upper and lower composite bus bar, a side is provided with the busbar flank perpendicular to described pole plate, and described exit is positioned at one end of flank.

3. capacitor as claimed in claim 1, is characterized in that, convexes with the fixed strip that is no less than on described housing, and described fixed strip is provided with the outside groove of opening direction along its length.

4. capacitor as claimed in claim 3, is characterized in that, described groove cross section is Ω type.

5. capacitor as claimed in claim 3, is characterized in that, described groove cross section is trumpet type.

6. capacitor as claimed in claim 1, is characterized in that, is also provided with fin on described housing.