CN203406176U

CN203406176U - Capacitor and core group thereof

Info

Publication number: CN203406176U
Application number: CN201320425870.4U
Authority: CN
Inventors: 余秀娜
Original assignee: SHENZHEN ZHISHENGXIN ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: Huizhou Zeasset Electronic Technology Co ltd
Priority date: 2013-07-17
Filing date: 2013-07-17
Publication date: 2014-01-22
Anticipated expiration: 2023-07-17

Abstract

The utility model discloses a capacitor and a core group thereof. The core group of the capacitor comprises an anode foil and a cathode foil. A wrapping initiating end of the cathode foil is on a position closed to a wrapping initiating end of the anode foil on the anode foil. Through arranging the position of the wrapping initiating end of the anode foil of the core group in front the position of the wrapping initiating end of the cathode foil, when the foils are winded, the anode foil winds earlier than the cathode foil, so that even burrs on the anode foil of the core group impale a piece of electrolytic paper, the burrs would not contact the cathode foil and cause short circuit. The capacitor and the core group thereof solve problems that breakdown is bad on a roll core of the core group, and are beneficial to improve quality of the core group and service life.

Description

Capacitor and core group thereof

Technical field

The utility model relates to capacitor technology field, relates in particular to a kind of capacitor and core group thereof.

Background technology

Shown in Fig. 1, Fig. 1 is a structural representation of the core group of prior art capacitor.

The core group of existing general capacitor generally comprises cathode foil 10 ＇, anode foil 20 ＇, leads chaff 30 ＇ and holds cathode foil 10 ＇ and electrolytic paper 40 ＇ of anode foil 20 ＇, wherein, the position that holds initiating terminal a ＇ that holds close anode foil 20 ＇s of initiating terminal b ＇ on anode foil 20 ＇ of cathode foil 10 ＇, the position that holds initiating terminal a ＇ of anode foil 20 ＇ is forward compared to the position that holds initiating terminal b ＇ of cathode foil 10 ＇.In Practical manufacturing, when core group holds, cathode foil 10 ＇ are in inner side, and anode foil 20 ＇ are in outside, and centre and paper tinsel both sides are separated with electrolytic paper 40 ＇, very thin of this electrolytic paper 40 ＇.And notching edge can leave extremely small burr and the surperficial paper tinsel ash that can adhere to minority in the process that cathode foil 10 ＇ cut at nail volume machine, anode foil 20 ＇ can not produce obvious or fatal burr because material is soft.

When core group is when reeling, because the position that holds initiating terminal a ＇ of anode foil 20 ＇ is forward compared to the position that holds initiating terminal b ＇ of cathode foil 10 ＇, so anode foil 20 ＇ first roll up compared with cathode foil 10 ＇, now, cathode foil 10 ＇ notching edges are encased completely by electrolytic paper 40 ＇ and anode foil 20 ＇.Now, just likely cause the notching edge burr that holds initiating terminal b ＇ place of cathode foil 10 ＇ to puncture electrolytic paper 40 ＇, thereby make cathode foil 10 ＇ contact and cause short circuit with anode foil 20 ＇.And while using this capacitor, spark phenomenon easily occurs capacitor, these burrs and paper tinsel ash also easily make capacitor be difficult to bear high ripple current and cause capacitor breakdown to lose efficacy.

Utility model content

Main purpose of the present utility model is to provide a kind of core group of capacitor, is intended to solve the cathode foil of core group and the problem of the easy short circuit of anode foil, to improve quality and the useful life of core group.

To achieve these goals, the utility model proposes a kind of core group of capacitor, the core group of this capacitor comprises cathode foil and anode foil, the position that holds initiating terminal that holds the close described cathode foil of initiating terminal in described cathode foil of described anode foil.

Preferably, also comprise electrolytic paper, described electrolytic paper layering holds described cathode foil and anode foil.

Preferably, also comprise the chaff of leading being riveted in cathode foil and anode foil, this riveting method of leading chaff and anode foil is cold riveting.

Preferably, riveted joint place of leading chaff and anode foil described in is equipped with interleaving paper.

Preferably, the vertical range holding between initiating terminal that holds initiating terminal and cathode foil of described anode foil is 2mm.

The utility model also proposes a kind of capacitor, and this capacitor comprises the core group of capacitor, and the core group of this capacitor comprises cathode foil and anode foil, the position that holds initiating terminal that holds the close described cathode foil of initiating terminal in described cathode foil of described anode foil.

The utility model device comprises cathode foil and anode foil, the position that holds initiating terminal that holds the close described cathode foil of initiating terminal in described cathode foil of described anode foil.Owing to holding core group, the position that holds initiating terminal of cathode foil is forward compared to the position that holds initiating terminal of anode foil, so cathode foil is first rolled up compared with anode foil, even if now the burr in the cathode foil of core group pierces through electrolytic paper and also can not contact with anode foil and cause short circuit, the volume core place that has effectively improved core group punctures bad problem, has improved quality and the useful life of core group.

Accompanying drawing explanation

Fig. 1 is a structural representation of the core group of prior art capacitor;

Fig. 2 is an angle partial structurtes schematic diagram of the core group of the utility model capacitor;

Fig. 3 is another angle partial structurtes schematic diagram of the core group of the utility model capacitor.

The realization of the utility model object, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.

Embodiment

Below in conjunction with Figure of description and specific embodiment, further illustrate the technical solution of the utility model.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.

The utility model proposes a kind of core group of capacitor.

Shown in Fig. 2 and Fig. 3, Fig. 2 is an angle partial structurtes schematic diagram of the core group of the utility model capacitor; Fig. 3 is another angle partial structurtes schematic diagram of the core group of the utility model capacitor.

The core group of the capacitor that the present embodiment provides comprises cathode foil 10 and anode foil 20, certainly also comprise being riveted on leading chaff 30 in cathode foil 10 and anode foil 20, and layering holds the electrolytic paper 40 of cathode foil 10 and anode foil 20.Wherein, the position that holds initiating terminal b that holds the close cathode foil 10 of initiating terminal a in cathode foil 10 of the anode foil 20 of core group.Owing to holding core group, the position that holds initiating terminal b of cathode foil 10 is forward compared to the position that holds initiating terminal a of anode foil 20, so cathode foil 10 is first rolled up compared with anode foil 20, even if now the burr in the cathode foil 10 of core group pierces through electrolytic paper 40 and also can not contact with anode foil 20 and cause short circuit, the volume core place that has effectively improved core group punctures bad problem, has improved quality and the useful life of core group.

Particularly, the above-mentioned chaff 30 of leading is cold riveting with the riveting method of anode foil 20.Anode foil 20 is soft, adopts cold riveting to fix and can not damage anode foil 20.Electrolytic paper 40, for isolating cathode foil 10 and anode foil 20, prevents cathode foil 10 and anode foil 20 short circuits.Above-mentioned cathode foil 10 hold initiating terminal b be core group while reeling cathode foil 10 start at first the place of reeling, above-mentioned anode foil 20 hold initiating terminal a be core group while reeling anode foil 20 start at first the place of reeling.

Further, the above-mentioned chaff 30 of leading is equipped with interleaving paper (not shown) with riveted joint place of anode foil 20.Thereby the internal breakdown of core group is effectively reduced, and improved useful life and the resistance to ripple ability of core group.

Further, the vertical range holding between initiating terminal b that holds initiating terminal a and cathode foil 10 of anode foil 20 is 2mm.Specifically as shown in Figure 3, wherein the length of d is 2mm.Because the price comparison of cathode foil 10 is expensive, it is too high that cathode foil 10 arranges long cost, arranges too shortly, likely causes again cathode foil 10 and anode foil 20 contact short circuits while holding core group.

The utility model also provides a kind of capacitor, and this capacitor comprises the core group of capacitor, and the detailed structure of the core group of capacitor can, with reference to above-described embodiment, not repeat herein.Owing to having used the core group of above-mentioned capacitor in capacitor, therefore, the problem of the core group internal short-circuit of this capacitor has obtained effective solution, thereby has greatly increased useful life and the anti-ripple ability of capacitor.

The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims

1. a core group for capacitor, comprises cathode foil and anode foil, it is characterized in that the position that holds initiating terminal that holds the close described cathode foil of initiating terminal in described cathode foil of described anode foil.

2. the core group of capacitor according to claim 1, is characterized in that, also comprises electrolytic paper, and described electrolytic paper layering holds described cathode foil and anode foil.

3. the core group of capacitor according to claim 1, is characterized in that, also comprises the chaff of leading being riveted in cathode foil and anode foil, and this riveting method of leading chaff and anode foil is cold riveting.

4. the core group of capacitor according to claim 3, is characterized in that, described in lead chaff and anode foil riveted joint place be equipped with interleaving paper.

5. the core group of capacitor according to claim 1, is characterized in that, the vertical range holding between initiating terminal that holds initiating terminal and cathode foil of described anode foil is 2mm.

6. a capacitor, is characterized in that, comprises the core group of the capacitor described in claim 1-5 any one.