CN212676113U

CN212676113U - Dry-type direct current filter capacitor

Info

Publication number: CN212676113U
Application number: CN202021692853.3U
Authority: CN
Inventors: 陈忠友; 卫中科; 方志; 王玉申; 熊元新; 吕少卫
Original assignee: Ningguo Yuhua Appliance Co ltd
Current assignee: Ningguo Yuhua Appliance Co ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2021-03-09
Anticipated expiration: 2030-08-14

Abstract

The utility model discloses a dry-type direct current filter capacitor, including casing and first, two capacitor core groups, it is first, be connected with the positive pole jointly between the positive pole of two capacitor core groups and connect female arranging, it is first to correspond respectively between the negative pole of two capacitor core groups, female arranging is connected to two negative poles, female arranging is connected with a plurality of positive terminal respectively to anodal connection, it is first, two negative poles are connected female arranging and correspond respectively to be connected with and correspond complex a plurality of with a plurality of positive terminal first, two negative terminal, a plurality of positive terminal, a plurality of is first, two negative terminal are drawn forth from the casing respectively. The utility model can integrate two capacitors together, thereby saving occupied space, realizing miniaturization and integration and improving power density; in addition, the two capacitors are connected with a positive electrode connecting bus bar in common, and the positive electrode binding posts are connected with a positive electrode connecting bus bar in common, so that the positive electrode equipotential is realized, redundant wiring is omitted, and the cost is saved.

Description

Dry-type direct current filter capacitor

Technical Field

The utility model relates to a car condenser technical field specifically is a dry-type direct current filter capacitor.

Background

The direct-current dry-type direct-current filter capacitor can improve the service life and safety performance of products, and is widely applied to power circuit design in industries such as frequency converters, SVG (static var generator), UPS (uninterrupted power supply), electric vehicles, hybrid vehicles, electroplating power supplies, inverter welding machines, inverter power supplies, induction heating equipment, high-power high-frequency switching power supplies, elevator motor drives, solar/wind power generation converters and the like.

With the development of new energy vehicles and hybrid vehicles, power electronics have been used on vehicles, and a direct-current dry-type direct-current filter capacitor is generally connected in parallel between a battery and each IGBT module as an important circuit component, and is suitable for absorbing peak voltage in the region of each IGBT module and protecting each IGBT module. At present, each IGBT module is generally equipped with a corresponding direct-current dry-type dc filter capacitor, for example, two corresponding direct-current dry-type dc filter capacitors are generally required to be equipped for the IGBT module of the vehicle driving system and the IGBT module of the vehicle power generation system, and the IGBT modules are independently arranged, occupy a large space, and are gradually unsuitable for the development trend of miniaturization and integration.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defect and not enough that prior art exists, provide a dry-type direct current filter capacitor, can be in the same place the condenser integration of two kinds of different appearance values, under the prerequisite that can protect automobile-used actuating system's IGBT module and automobile-used power generation system's IGBT module respectively, save shared space, realize the miniaturization, integrate.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a dry-type direct current filter capacitor, is including casing and encapsulation at inside first capacitor core group, the second capacitor core group of its characterized in that: the utility model discloses a lead-out type capacitor, including first condenser core group and second condenser core group, be connected with anodal connection female arranging between the positive pole of first condenser core group and second condenser core group jointly, correspond respectively between the negative pole of first condenser core group and second condenser core group and be connected with first negative pole connection female arranging and second negative pole connection female arranging, anodal connection female arranging be connected with a plurality of positive terminal post respectively, first negative pole connect female arranging with the second negative pole connect female arranging correspond respectively be connected with a plurality of positive terminal post corresponds first negative terminal post of complex a plurality of and a plurality of second negative terminal post, a plurality of positive terminal post, a plurality of first negative terminal post and a plurality of second negative terminal post follow respectively draw forth in the casing.

Furthermore, the shell is a PPS plastic shell, or a shell formed by encapsulating epoxy resin and curing.

Further, the positive electrode connecting bus bar extends upwards and bypasses the first capacitor core group and the second capacitor core group from the upper part, and then extends downwards to the lower parts of the first capacitor core group and the second capacitor core group along the outer side of the first negative electrode connecting bus bar and the second negative electrode connecting bus bar.

Furthermore, the positive electrode connecting busbar and the first negative electrode connecting busbar and the second negative electrode connecting busbar are provided with insulating sheets.

Furthermore, the insulating sheet is an insulating paper sheet clamped between the positive electrode connecting busbar and the first negative electrode connecting busbar as well as the second negative electrode connecting busbar.

Furthermore, the leading-out ends of the plurality of positive binding posts are connected with a positive connecting bus together.

Furthermore, the leading-out ends of the first negative terminal posts and the second negative terminal posts are respectively and correspondingly connected with a first negative connecting bus and a second negative connecting bus.

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

the utility model discloses simple structure can integrate the electric capacity of two kinds of different appearance values together, under the prerequisite that can protect the IGBT module of automobile-used actuating system and the IGBT module of automobile-used power generation system respectively, has effectively saved occupied space, has realized miniaturization, integration, has improved power density; in addition, the two capacitors are connected with a positive electrode connecting bus bar in common, and the positive electrode binding posts are connected with a positive electrode connecting bus bar in common, so that the positive electrode equipotential is realized, redundant wiring is omitted, the space is saved, and the cost is saved.

Drawings

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

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is the utility model discloses with the battery and the functional block diagram of two sets of IGBT module connection return circuits.

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.

Referring to fig. 1-3, a dry-type dc filter capacitor includes a case 1, and a first capacitor core group 2 and a second capacitor core group 3 enclosed therein, wherein a positive connection bus bar 4 is commonly connected between the positive electrodes of the first capacitor core group 2 and the second capacitor core group 3, a first negative connection bus bar 5 and a second negative connection bus bar 6 are respectively and correspondingly connected between the negative electrodes of the first capacitor core group 2 and the second capacitor core group 3, the positive connection bus bar 4 is respectively connected with four positive terminals 7, the first negative connection bus bar 5 and the second negative connection bus bar 6 are respectively and correspondingly connected with two first negative terminals 8 and two second negative terminals 9 and four positive terminals 7 respectively corresponding to the four positive terminals 7, two first negative terminals 8 and two second negative terminals 9 are respectively led out from the interior of the case 1.

In the utility model, the shell 1 can adopt non-metal shells such as PPS plastic shell, and the space between the shell 1 and the first capacitor core group 2 and the second capacitor core group 3 is filled with epoxy resin; the housing 1 may also be formed using potting epoxy and cured.

The positive electrode connecting bus bar 4 extends upward and bypasses the first capacitor core group 2 and the second capacitor core group 3 from above, and then extends downward to the lower parts of the first capacitor core group 2 and the second capacitor core group 3 along the outer sides of the first negative electrode connecting bus bar 5 and the second negative electrode connecting bus bar 6. From this, female arranging 4 of anodal connection can be connected female arranging 5 and the second negative pole with first negative pole and is connected female arranging 6 setting at the homonymy for four anodal terminal 7, two first negative terminal 8 and two second negative terminal 9 that connect respectively are located the homonymy, are convenient for work a telephone switchboard.

An insulating sheet 10 is arranged between the positive electrode connecting bus 4 and the first negative electrode connecting bus 5 and between the positive electrode connecting bus and the second negative electrode connecting bus 6; the insulating sheet 10 adopts the insulating scraps tightly clamped between the positive connecting busbar 4, the first negative connecting busbar 5 and the second negative connecting busbar 6, is low in cost, and can be insulated between the positive connecting busbar 4, the first negative connecting busbar 5 and the second negative connecting busbar 6 to prevent short circuit.

The leading-out terminals of the four positive terminals 7 are commonly connected to a positive connection bus bar (not shown in the figure, the same applies hereinafter).

The leading ends of the two first negative terminals 8 and the two second negative terminals 9 are respectively connected to a first negative connection bus (not shown) and a second negative connection bus (not shown).

The invention is further described below with reference to the accompanying drawings:

the first capacitor core group 2 and the second capacitor core group 3 are integrated in the same shell 1, and the specific capacitance values thereof are respectively matched with an IGBT module of a vehicle driving system and an IGBT module of a vehicle generating system, which are not set herein.

Therefore, on the premise that the IGBT module of the vehicle driving system and the IGBT module of the vehicle power generation system can be respectively protected, the occupied space is effectively saved, the miniaturization and the integration are realized, and the power density is improved; in addition, the first capacitor core group 2 and the second capacitor core group 3 are connected with one positive electrode in common and are connected with the busbar 4, and the four positive electrode binding posts 7 are connected with one positive electrode in common and are connected with the bus, so that the positive electrode equipotential is realized, redundant wiring can be saved, the space is saved, and the cost is saved.

When using, the utility model provides a first capacitor core group 2 and second capacitor core group 3 correspond respectively and connect in parallel between the IGBT module of battery and automobile-used actuating system's IGBT module and automobile-used power generation system's IGBT module, can absorb the regional peak voltage of these two sets of IGBT modules, play the effect of protecting these two sets of IGBT modules.

Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.

Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The utility model provides a dry-type direct current filter capacitor, is including casing and encapsulation at inside first capacitor core group, the second capacitor core group of its characterized in that: the utility model discloses a lead-out type capacitor, including first condenser core group and second condenser core group, be connected with anodal connection female arranging between the positive pole of first condenser core group and second condenser core group jointly, correspond respectively between the negative pole of first condenser core group and second condenser core group and be connected with first negative pole connection female arranging and second negative pole connection female arranging, anodal connection female arranging be connected with a plurality of positive terminal post respectively, first negative pole connect female arranging with the second negative pole connect female arranging correspond respectively be connected with a plurality of positive terminal post corresponds first negative terminal post of complex a plurality of and a plurality of second negative terminal post, a plurality of positive terminal post, a plurality of first negative terminal post and a plurality of second negative terminal post follow respectively draw forth in the casing.

2. A dry-type dc filter capacitor as set forth in claim 1, wherein: the shell is a PPS plastic shell or a shell formed by encapsulating epoxy resin and curing.

3. A dry-type dc filter capacitor as set forth in claim 1, wherein: the positive electrode connecting bus bar extends upwards and bypasses the first capacitor core group and the second capacitor core group from the upper part, and the outer side of the first negative electrode connecting bus bar and the second negative electrode connecting bus bar extends downwards to the lower parts of the first capacitor core group and the second capacitor core group.

4. A dry-type dc filter capacitor as set forth in claim 3, wherein: the positive electrode connecting bus bar is provided with an insulating sheet between the first negative electrode connecting bus bar and the second negative electrode connecting bus bar.

5. A dry-type DC filter capacitor as set forth in claim 4, wherein: the insulating sheet adopts an insulating paper sheet clamped between the positive electrode connecting busbar and the first negative electrode connecting busbar as well as the second negative electrode connecting busbar.

6. A dry-type dc filter capacitor as set forth in claim 1, wherein: the leading-out ends of the plurality of positive binding posts are connected with a positive connecting bus together.

7. A dry-type dc filter capacitor as set forth in claim 6, wherein: the leading-out ends of the first negative terminal posts and the second negative terminal posts are respectively and correspondingly connected with a first negative connecting bus and a second negative connecting bus.