CN207705046U - A kind of resistance to heavy DC support capacitor - Google Patents

Abstract

The utility model discloses a kind of resistance to heavy DC support capacitor, including shell, capping and core, core is arranged inside housings, and pass through lidstock, core includes multiple fuse groups, parallel communication between fuse group, and fuse group includes multiple fuses, the utility model solves the technical problem of resistance to current characteristics difference in the prior art.

Description

A kind of resistance to heavy DC support capacitor

Technical field

The utility model is related to capacitor technology field more particularly to a kind of resistance to heavy DC support capacitors.

Background technology

Metallic film capacitor is one of electronic equipment primary element, and there is blocking, bypass, coupling, filtering, energy to turn It changes, the fields such as resonant tank and control circuit, thin film capacitor is widely used as AC-DC, DC- in new-energy automobile field at present DC support capacitance in AC converters, that is, DC-LINK capacitors, DC-LINK metallic film capacitors are mainly used for Filtering with absorb spike, feature must capacity be big, ESR and ESL are small.Large capacity is with metallized film using multiple by certain Core part parallel connection is constituted after technique winding, is then drawn by busbar.Soldering is generally used between busbar and fuse end face Or the technique of electric current welding is attached；New-energy automobile with DC-LINK metallic film capacitors in the production process all The metal spraying face by busbar and capacitor body is needed to be attached by certain way；New-energy automobile is metallized with DC-LINK The internal capacitor fuse of thin film capacitor is using horizontal or vertical placement, after being connected by the metal spraying end face of bus-bar and both sides Extraction electrode, under normal conditions the width of electrode usually with the equivalent width of capacitor body, with this come ensure connection entirety Property；For the ease of assembly, the width of general capacitor body is suitable with the inner wall width of shell, in this way convenient for bus-bar just from Capacitor both sides are drawn, but the resistance to current characteristics of existing metallic film capacitor is poor.

Utility model content

The purpose of this utility model is to provide a kind of resistance to heavy DC support capacitor, solves in the prior art resistance to The technical problem of current characteristics difference.

A kind of resistance to heavy DC support capacitor, including shell, capping and core, the core are arranged in the shell Inside, and by the lidstock, the core include multiple fuse groups, parallel communication between the fuse group, and fuse Group includes multiple fuses.

Based on the above technical solution, the utility model can also do following improvement：

Further, each fuse group includes two fuses, the fuse stagger setting, using the beneficial effect of this step Fruit is to combine to form an individual fuse group using two individual fuses, and such electrode length is long compared to the electrode in existing Degree has grown one times, and withstanding current capability improves 1.5-2 times or so by measuring and calculating under same volume.

Further, the inner face of the adjacent fuse connects to form first electrode by the first connecting terminal, adjacent The outer end face of the fuse connect to form second electrode by the second connecting terminal, the advantageous effect using this step is to be staggered to set It sets, can solve the problems, such as welding in this way, the inner face of fuse can be connected and be drawn.

Further, the first electrode passes through the second confluence by the first bus-bar parallel communication, the second electrode Parallel communication is arranged, the advantageous effect using this step is that the fuse group of the utility model is enable to form parallel connection.

Further, the enclosure interior is provided with epoxy resin filled layer.

The beneficial effects of the utility model：

The utility model is a kind of capacitor, can realize resistance to high current, including multiple fuse groups, be carried out between fuse group Parallel connection, there are two fuses to form for fuse group, and fuse stagger setting, the electrode length formed in this way is elongated, the resistance to electric current of capacitor Characteristic depends on the extremely long of capacitor, it is generally the case that and when extremely longer, resistance to current characteristics is stronger, therefore the utility model Resistance to current characteristics will improve.

Description of the drawings

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, other drawings may also be obtained based on these drawings.

Fig. 1 is a kind of structure main view of resistance to heavy DC support capacitor described in the utility model specific embodiment Figure；

Fig. 2 is that a kind of structure back of the body of resistance to heavy DC support capacitor described in the utility model specific embodiment regards Figure；

Reference numeral：

1- shells；2- is covered；3- cores；4- fuse groups；5- fuses；The first connecting terminals of 6-；7- first electrodes；8- Two connecting terminals；9- second electrodes；The first bus-bars of 10-；The second bus-bars of 11-；12- epoxy resin filled layers.

Specific implementation mode

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality Novel protected range.

As shown in Figs. 1-2, a kind of resistance to heavy DC support capacitor provided by the utility model, including shell 1, envelope Lid 2 and core 3, the core 3 are arranged inside the shell 1, and by 2 sealing of the capping, and the core 3 includes multiple Fuse group 4, parallel communication between the fuse group 4, and fuse group 4 includes multiple fuses 5, pervious single fuse is divided into more A fuse combination, can increase electrode length, to improve resistance to current characteristics in this way.

Wherein, each fuse group 4 includes two fuses 5, and 5 stagger setting of the fuse utilizes two individual cores Sub-portfolio formed an individual fuse group, such electrode length compare it is existing in electrode length grown one times, same volume Lower withstanding current capability improves 1.5-2 times or so by measuring and calculating, and 5 stagger setting of fuse can be convenient for welding operation in this way.

Wherein, the inner face of the adjacent fuse 5 forms first electrode 7 by the connection of the first connecting terminal 6, adjacent The outer end face of the fuse 5 forms second electrode 9 by the connection of the second connecting terminal 8, and stagger setting can solve to weld in this way The problem of, and the inner face of fuse can be connected and be drawn, form capacitance ontology.

Wherein, the first electrode 7 passes through the second confluence by 10 parallel communication of the first bus-bar, the second electrode 9 Arrange 11 parallel communications so that the fuse group 4 of the utility model can form parallel connection.

Wherein, the shell 1 is internally provided with epoxy resin filled layer 12.

Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new The range of each embodiment technical solution of type.

Claims (5)

1. a kind of resistance to heavy DC support capacitor, including shell, capping and core, the core is arranged in the shell Portion, and pass through the lidstock, which is characterized in that the core includes multiple fuse groups, between the fuse group it is in parallel even It is logical, and fuse group includes multiple fuses.

2. a kind of resistance to heavy DC support capacitor according to claim 1, which is characterized in that each fuse group Including two fuses, the fuse stagger setting.

3. a kind of resistance to heavy DC support capacitor according to claim 2, which is characterized in that the adjacent fuse Inner face connect to form first electrode by the first connecting terminal, the outer end face of the adjacent fuse passes through the second terminals Son connection forms second electrode.

4. a kind of resistance to heavy DC support capacitor according to claim 3, which is characterized in that the first electrode is logical The first bus-bar parallel communication is crossed, the second electrode passes through the second bus-bar parallel communication.

5. according to a kind of any resistance to heavy DC support capacitors of claim 1-4, which is characterized in that the shell It is internally provided with epoxy resin filled layer.