CN205354887U

CN205354887U - Sealed -type cylindricality farad capacitor

Info

Publication number: CN205354887U
Application number: CN201620002041.9U
Authority: CN
Inventors: 周俊瑶
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-06-21
Filing date: 2016-01-05
Publication date: 2016-06-29
Anticipated expiration: 2026-01-05

Abstract

The utility model belongs to the technical field of the electron, a sealed -type cylindricality farad capacitor is disclosed, including casing, core, current collector, end cover, anodal current collector and negative pole current collector weld with core both ends respectively, the last insulating film that is provided with of shells inner wall, casing are equipped with to seal by proximal end portion uses the scrobicular ring, and the end cover is in the same place with the end part of the housing punching press encapsulation, is equipped with the insulating seal circle between end cover and the casing, and the terminal is established in the end cover outside, and the end cover is inboard to be connected with homonymy current collector electricity. The utility model discloses a farad capacitor has the safe leakproof of casing outward appearance, inside incorrosive advantage.

Description

A kind of sealing type cylindricality farad capacitor

Technical field

This utility model belongs to electronic technology field, relates to a kind of capacitor, more specifically, relates to a kind of farad capacitor.

Background technology

Farad capacitor is also super capacitor, belongs to double layer capacitor, and it is to have put into the one that in the double layer capacitor of volume production, capacity is maximum in the world, and its ultimate principle is the same with the double layer capacitor of other kind.General capacity is Large Copacity farad capacitor many employings cylindrical shape of 100-5000F, and cylindrical or square column type all has.

Mainly being made up of tubular shell, core body, end cap etc. in common cylindricality farad capacitor structure, core body is formed by two-layer electrode layer winding, and two ends are welded with anode collection plate, negative pole currect collecting plate respectively.Collector plate is electrically connected with end cap or binding post.

Performance is wanted most to connect mark for one that sealing is farad capacitor.Existing farad capacitor, its electrolyte inside directly contacts with inner walls, and amount of money housing is had corrosiveness.But housing is different from end cap, its thinner thickness, the long-term life-span being affected electric capacity by seriously corroded.Especially the position of sealing problem is easily produced at solder joint etc..After being corroded, overall tightness impact is also very big, make the reliability of product and life-span be greatly reduced.

Existing farad capacitor is usually the end cap of positive terminal and is connected with housing insulated enclosure, the end cap of negative pole end directly weld with housing or with housing one.Positive terminal is electrically connected with positive terminal end cap, and negative terminal is electrically connected with negative pole end end cap or housing.Collector plate is welded with same side end cap or contact electrical connection.This attachment structure is primarily present problem: 1, collector plate and end cap welding procedure are complicated, and cost is high；2, welding process requirement is high, it is easy to produce the unreliable factors such as rosin joint, is directed at internal resistance and increases.

Summary of the invention

The purpose of this utility model is in that, the problem of the aspects such as the sealing existed for existing farad capacitor and connection reliability, it is provided that a kind of sealing reliability is high, internal resistance is less and connects reliable farad capacitor structure.

For achieving the above object, the utility model proposes a kind of cylindricality farad capacitor, weld with core body two ends respectively including housing, core body, collector plate, end cap, anode collection plate and negative pole currect collecting plate, it is characterised in that described inner walls is provided with dielectric film.

Further, the utility model proposes a kind of sealing type cylindricality farad capacitor, weld with core body two ends respectively including housing, core body, collector plate, end cap, anode collection plate and negative pole currect collecting plate, it is characterised in that, described inner walls is provided with dielectric film, housing is provided with sealing scrobicular ring near end, and end cap and shell end punching press are packaged together, and are provided with insulated enclosure circle between end cap and housing, set binding post outside end cap, electrically connect with homonymy collector plate inside end cap.

This improvement structure, is possible not only to avoid electrolyte to contact with housing, efficiently solves the impact on life of product and reliability of the corrosivity of electrolyte.Also there is the uncharged feature of housing, it is possible to prevent from being leaked electricity by housing appearance.

Further, setting connecting portion inside end cap, connecting portion is connected by threaded engagement with collector plate.

Specifically, connecting edge along collector plate and be provided with connection ring structure outside described collector plate, connect and be provided with female thread inside ring, the periphery of the connecting portion of end cap is provided with the external screw thread of the screw-internal thread fit being connected on ring with collector plate.

Screw connection structure between this collector plate and the connecting portion of end cap, can ensure that on the one hand the reliability of connection, contacts with each other, between ridge, the contact area considerably increasing between collector plate and end cap on the other hand, effectively reduces internal resistance.

Further, after described connecting portion is threadeded with collector plate, connecting portion medial surface electrically connects with collector plate lateral surface contact.To reduce internal resistance further.

Further, described connection ring is provided with radial direction top thread hole, and top lock screw screws in top wire hole and holds out against with connecting portion.By connecting portion and collector plate locking.

Further, described connecting portion can also be the independent parts electrically connected with end cap.

Accompanying drawing explanation

Fig. 1 is the overall structure schematic diagram of a kind of instantiation of sealing type cylindricality farad capacitor described in the utility model.

Fig. 2 is end cap structural representation in farad capacitor shown in Fig. 1.

Fig. 3 be end cap shown in Fig. 2 along cross-sectional centerline figure.

Fig. 4 is collector plate structural representation in farad capacitor shown in Fig. 1.

Fig. 5 is collector plate shown in Fig. 4 along cross-sectional centerline figure.

Fig. 6 is farad capacitor straight-tube shape shell structure schematic diagram shown in Fig. 1.

Fig. 7 is housing A-A shown in Fig. 6 to sectional view.

Fig. 8 is Fig. 7 centre circle c place structure for amplifying schematic diagram.

Fig. 9 is the farad capacitor structural representation adopting individual connections to threaded with collector plate.

Detailed description of the invention

With reference to Fig. 1-8, cylindricality farad capacitor described in the utility model, it is possible to be cylindrical, as shown in figs 1-9, it is also possible to be square column type.

For cylinder, including housing 6, core body 5, two end caps 2 of 7, two collector plate, core body is arranged on enclosure interior, and core diameter is close with housing inner diameter.Described collector plate 5 is porous plate, and anode collection plate and negative pole currect collecting plate weld with core body two ends respectively.Housing is straight-tube shape, and whole inwalls patch dielectric film 15, housing is respectively arranged at two ends with sealing scrobicular ring 8, and company's edge of housing is inwardly turned back by the mode of punching press, and the company's edge inwardly turned back acts on mutually with scrobicular ring and being fixed at end cap edge.Insulated enclosure circle 3 it is provided with between end cap and housing.

End cap outer side center position sets binding post 1.It is provided with the connecting portion 4 internally protruded inside end cap, connecting portion outer circumference surface 11 sets external screw thread.It is provided with connection ring 12 outside collector plate, connects ring medial surface 14 and be provided with female thread, the external screw thread of connecting portion and the screw-internal thread fit being connected ring.

The connection ring of collector plate is provided with top wire hole 13.After the connecting portion of end cap and collector plate are threaded connection, in top wire hole, screw in top lock screw, by connecting portion and collector plate locking.

With reference to Fig. 9, the non-end cap part of connecting portion shown in this figure, but the parts of a relative end cap independence, connecting portion center is provided with pilot hole, and end cap medial center position is provided with riveting post, and connecting portion is connected by the mode riveted with housing.

Claims

1. a sealing type cylindricality farad capacitor, including housing, core body, collector plate, end cap, anode collection plate and negative pole currect collecting plate weld with core body two ends respectively, it is characterized in that, described inner walls is provided with dielectric film, housing is provided with sealing scrobicular ring near end, end cap and shell end punching press are packaged together, it is provided with insulated enclosure circle between end cap and housing, outside end cap, sets binding post, electrically connect with homonymy collector plate inside end cap.

2. sealing type cylindricality farad capacitor according to claim 1, it is characterised in that setting connecting portion inside end cap, connecting portion is connected by threaded engagement with collector plate.

3. sealing type cylindricality farad capacitor according to claim 2, it is characterized in that, connecting edge along collector plate outside described collector plate and be provided with connection ring structure, connect and be provided with female thread inside ring, the periphery of the connecting portion of end cap is provided with the external screw thread of the screw-internal thread fit being connected on ring with collector plate.

4. sealing type cylindricality farad capacitor according to claim 3, it is characterised in that after described connecting portion is threadeded with collector plate, connecting portion medial surface electrically connects with collector plate lateral surface contact.

5. sealing type cylindricality farad capacitor according to claim 3, it is characterised in that described connection ring is provided with radial direction top thread hole, and top lock screw screws in top wire hole and holds out against with connecting portion.

6. sealing type cylindricality farad capacitor according to claim 2, it is characterised in that described connecting portion is also the independent parts electrically connected with end cap.