CN202093985U

CN202093985U - Aluminum electrolytic capacitor

Info

Publication number: CN202093985U
Application number: CN2011201629436U
Authority: CN
Inventors: 林金村
Original assignee: Capxon Electronic Shenzhen Co ltd
Current assignee: Capxon Electronic Shenzhen Co ltd
Priority date: 2011-05-18
Filing date: 2011-05-18
Publication date: 2011-12-28
Anticipated expiration: 2021-05-18

Abstract

The present utility model discloses an aluminum electrolytic capacitor which comprises a shell, a component and a glue cover. The component comprises an anode foil, a cathode foil and at least a piece of electrolytic paper which are coiled into a core wrap. A first capacitor guide pin is riveted on the anode foil, a second capacitor guide pin is riveted on the cathode foil, and a liner foil is covered on the connecting part of the second capacitor guide pin and the cathode foil in a riveting way. As the liner foil is covered on the connecting part of the second capacitor guide pin and the cathode foil in a riveting way, the capacitor short circuit breakdown risk caused by the piercing of guide pin tongue burrs into the electrolytic paper and the marginal discharge of the guide pin tongue burrs can be reduced, new current paths are added, thus reverse voltage and higher temperature can be endured by the capacitor, the ripple wave current resistant ability of products can be increased, and the service life of the products can be prolonged.

Description

Aluminium electrolytic capacitor

Technical field

The utility model relates to a kind of capacitor, refers in particular to a kind of aluminium electrolytic capacitor.

Background technology

Common aluminium electrolytic capacitor includes a shell, and is arranged at sub-prime and in the described shell and is arranged at Jiao Gai in the described shell, and sub-prime stings the capacitor guide pin of riveting on described anode foils and Cathode Foil respectively by an anode foils, a Cathode Foil, at least one electrolytic paper and two and constitutes.Because the capacitor guide pin directly stings riveting in Cathode Foil, the burr of guide pin tongue pierces through electrolytic paper easily, has not only influenced the performance of aluminium electrolytic capacitor, also exists potential safety hazard.

So, have and need the aluminium electrolytic capacitor of existing structure be improved, to satisfy the demand on using.

Summary of the invention

The utility model is to solve low, the technical problem of anti-high ripple current not in existing aluminium electrolytic capacitor existing useful life, and the aluminium electrolytic capacitor of a kind of long service life, anti-high ripple current is provided.

For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of aluminium electrolytic capacitor, it includes a shell, a sub-prime and a Jiao Gai, described sub-prime includes an anode foils, a Cathode Foil and at least one electrolytic paper that is wound into the core bag, the thorn riveting has one first capacitor guide pin on the described anode foils, and the thorn riveting has one second capacitor guide pin on the described Cathode Foil, and the junction riveted joint of described second capacitor guide pin and Cathode Foil is coated with a liner paper tinsel.

In the above-mentioned aluminium electrolytic capacitor, described liner paper tinsel is the negative pole aluminium foil.

In the above-mentioned aluminium electrolytic capacitor, described liner paper tinsel cold welding is riveted on the joint of described second capacitor guide pin and Cathode Foil.

In the above-mentioned aluminium electrolytic capacitor, described liner paper tinsel length is 15～18mm.

Useful technique effect of the present utility model is: the junction riveted joint of this second capacitor guide pin and this Cathode Foil is coated with a liner paper tinsel, the burr that has reduced on the one hand the guide pin tongue pierces through the capacitor short-circuit that electrolytic paper and the point discharge of guide pin tongue burr cause and punctures risk, increased new current path on the other hand, make capacitor can bear reverse voltage and higher temperature, improve the anti-ripple current ability of product, prolong the useful life of product.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of the utility model aluminium electrolytic capacitor.

Fig. 2 is the structural representation of the sub-prime of the utility model aluminium electrolytic capacitor.

Embodiment

For making those of ordinary skill in the art be expressly understood the purpose of this utility model, technical scheme and advantage more, the utility model is further elaborated below in conjunction with drawings and Examples.

With reference to shown in Figure 1, aluminium electrolytic capacitor disclosed in the utility model includes the sub-prime 20 and that a shell 10, is arranged in this shell 10 and is arranged in this shell 10 to fix the glue lid 30 of this sub-prime 20.

In conjunction with shown in Figure 2, this sub-prime 20 includes an anode foils 200, a Cathode Foil 201 and at least one electrolytic paper 202 that is wound into the core bag, the thorn riveting has one first capacitor guide pin 203 on this anode foils 200, then stinging riveting on this Cathode Foil 201 has one second capacitor guide pin 204, rivets with the junction of this Cathode Foil 201 in this second capacitor guide pin 204 and is coated with a liner paper tinsel 205.Owing to be coated with a liner paper tinsel 205 in the riveted joint of the junction of this second capacitor guide pin 204 and this Cathode Foil 201, the burr that has lowered on the one hand the guide pin tongue pierces through the capacitor short-circuit that electrolytic paper and the point discharge of guide pin tongue burr cause and punctures risk, increased new current path on the other hand, make capacitor can bear reverse voltage and higher temperature, thereby improve the anti-ripple current ability of product, prolong the useful life of product.

Preferably, this liner paper tinsel 205 adopts the negative pole aluminium foil, and it is about 15～18mm, is riveted on the joint of this second capacitor guide pin 204 and Cathode Foil 201 by cold welding.

The above only is a preferred embodiment of the present utility model, but not the utility model is done any form restriction, and all equivalent variations or modifications of being done in the claim scope all should fall within the protection range of the present utility model.

Claims

1. aluminium electrolytic capacitor, include a shell (10), a sub-prime (20) and a Jiao Gai (30), described sub-prime (20) includes an anode foils (200), a Cathode Foil (201) and at least one electrolytic paper (202) that is wound into the core bag, described anode foils (200) goes up the thorn riveting one first capacitor guide pin (203), and the riveting of the last thorn of described Cathode Foil (201) has one second capacitor guide pin (204), it is characterized in that: the described second capacitor guide pin (204) is coated with a liner paper tinsel (205) with the junction riveted joint of Cathode Foil (201).

2. aluminium electrolytic capacitor as claimed in claim 1 is characterized in that: described liner paper tinsel (205) is the negative pole aluminium foil.

3. aluminium electrolytic capacitor as claimed in claim 1 is characterized in that: described liner paper tinsel (205) cold welding is riveted on the joint of described second capacitor guide pin (204) and Cathode Foil (201).

4. aluminium electrolytic capacitor as claimed in claim 1 is characterized in that: described liner paper tinsel (205) length is 15～18mm.