CN210956462U

CN210956462U - Lead plate and capacitor thereof

Info

Publication number: CN210956462U
Application number: CN201922413448.7U
Authority: CN
Inventors: 景俊峰; 何霄云; 张薇; 徐志友; 朱羽; 杨波
Original assignee: NANTONG JIANGHAI CAPACITOR CO Ltd
Current assignee: NANTONG JIANGHAI CAPACITOR CO Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-07-07
Anticipated expiration: 2029-12-27

Abstract

The utility model provides a lead plate, including the lead plate body, the lead plate body has fixed part and contact site, the fixed part is the plane, high both ends are low in the middle of the contact site cross-section. The utility model discloses a fixed part is the plane, can guarantee closely to laminate with the aluminium foil, reliable riveting. The contact part is a curved surface, the aluminum foil is close to the curved surface in the winding process, and the included angle caused by the thickness of the lead plate is much smaller, so that the existence of obvious creases of the aluminum foil is avoided, and the breakdown rate is reduced.

Description

Lead plate and capacitor thereof

Technical Field

The utility model relates to a condenser technical field especially relates to a novel condenser.

Background

At present, the capacitor is widely used in electrical equipment, an aluminum foil with a certain thickness of aluminum oxide on the surface layer is used as a positive electrode material, an electrolyte of a glycol system is used as a negative electrode, an electrolytic capacitor can be manufactured, the electrolytic capacitor is used for filtering and rectifying in a direct current circuit, better use value is brought, certain defects exist in the existing capacitor, lead plates of the capacitor and the aluminum foil are bound together through a riveting device, and then a core package is formed through winding a plurality of circles, the traditional lead plates are rectangular, after the lead plates and the aluminum foil are riveted, an outer ring aluminum foil can abut against one side of the lead plates which is not riveted, but due to the thickness of the lead plates, the aluminum foil can be bent at the edge, and a folding angle phi is generated as shown in figure 1. Aluminum foil is particularly brittle, especially high pressure aluminum foil. The break angle easily causes aluminum foil cracks and forms a breakdown problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve present condenser lead plate thickness and lead to the aluminium foil to produce the crackle, cause the problem of puncture, the utility model provides a condenser lead plate, including the lead plate body, the lead plate body has fixed part and contact site, the fixed part is the plane, high both ends are low in the middle of the contact site cross-section.

Preferably, the contact portion is a curved surface. When the core bag is wound, because the contact part is a curved surface, the core bag is tightly attached to the curved surface in the winding process, and an included angle formed between the core bag and the contact part is much smaller, so that the existence of aluminum foil creases is avoided, and the breakdown efficiency is reduced.

Further, the electrolytic paper winding device comprises a core bag formed by winding electrolytic paper, wherein an aluminum foil is arranged on the inner side of the electrolytic paper, and the surface of the aluminum foil is provided with the lead plate body.

Preferably, the core package includes positive electrolytic paper and negative electrolytic paper, the aluminium foil includes anodal aluminium foil and negative pole aluminium foil, positive electrolytic paper inboard is equipped with anodal aluminium foil, negative electrolytic paper inboard is equipped with the negative pole aluminium foil, positive electrolytic paper and negative electrolytic paper are convoluteed after folding and are formed the core package.

Further, the lead plate body comprises a positive lead plate and a negative lead plate, the positive lead plate is located on the inner surface of the positive aluminum foil, the negative lead plate is located on the inner surface of the negative aluminum foil, and the lead plate body is connected with terminals.

Preferably, the capacitor further comprises a shell and an end cover, wherein the core package is arranged in the shell, and the end cover is arranged on the upper surface of the shell.

Furthermore, the lead plate body is riveted on the aluminum foil through a riveting hole.

Has the advantages that: the utility model discloses a fixed part is the plane, can guarantee closely to laminate with the aluminium foil, reliable riveting. The contact part is a curved surface, the aluminum foil is close to the curved surface in the winding process, and the included angle caused by the thickness of the lead plate is much smaller, so that the existence of obvious creases of the aluminum foil is avoided, and the breakdown rate is reduced.

Drawings

FIG. 1 is a cross-sectional view of a conventional lead plate;

FIG. 2 is a schematic diagram of a lead plate structure of the present invention;

FIG. 3 is a schematic cross-sectional view of the lead plate of the present invention;

fig. 4 is a schematic view of the core package structure of the present invention;

fig. 5 is a schematic view of the capacitor structure of the present invention;

1. a lead plate body; 2. a terminal; 3. a positive aluminum foil; 4. positively electrolyzed paper; 5. a core package; 6. a contact portion; 7. a fixed part; 8. a housing; 9. an end cap; 10. negative electrolytic paper; 11. and a negative aluminum foil.

Detailed Description

Example one

As shown in the figures, the lead plate comprises a lead plate body 1, wherein the lead plate body 1 is provided with a fixing part 7 and a contact part 6, the fixing part 7 is a plane, and the middle of the cross section of the contact part 6 is high, and the two ends of the cross section are low. The contact portion 6 is a curved surface.

The novel electrolytic paper core package comprises a core package 5 formed by winding electrolytic paper, wherein an aluminum foil is arranged on the inner side of the electrolytic paper, and the surface of the aluminum foil is provided with the lead plate body 1. Core package 5 is including positive electrolytic paper 4 and negative electrolytic paper 10, the aluminium foil includes anodal aluminium foil 3 and negative pole aluminium foil 11, positive electrolytic paper 4 inboard is equipped with anodal aluminium foil 3, negative electrolytic paper 10 inboard is equipped with negative pole aluminium foil 11, positive electrolytic paper 4 and negative electrolytic paper 10 are convoluteed after range upon range of and are formed core package 5. Lead plate body 1 includes positive lead plate and negative lead plate, positive lead plate is located 3 internal surfaces of anodal aluminium foil, the negative lead plate is located 11 internal surfaces of negative pole aluminium foil, all be connected with terminal 2 on the lead plate body 1. The capacitor further comprises a shell 8 and an end cover 9, wherein the core package 5 is arranged in the shell 8, and the end cover 9 is arranged on the upper surface of the shell 8. The lead plate body 1 is riveted on the aluminum foil through a riveting hole 12.

The working principle is as follows: the lead plate body 1 is riveted on the aluminum foil, then the core package is wound, so that the core package is tightly attached to the contact part 6, and the contact part 6 is a curved surface, so that the included angle phi is very small, the existence of an obvious crease mark of the aluminum foil is avoided, and the breakdown rate is reduced.

Claims

1. A lead plate characterized in that: the lead plate comprises a lead plate body (1), wherein the lead plate body (1) is provided with a fixing part (7) and a contact part (6), the fixing part (7) is a plane, and the middle of the cross section of the contact part (6) is high, and the two ends of the cross section of the contact part are low.

2. A lead plate as defined in claim 1, wherein: the contact portion (6) is a curved surface.

3. A capacitor using the lead plate of any one of claims 1-2, wherein: the novel lead plate comprises a core bag (5) formed by winding electrolytic paper, wherein an aluminum foil is arranged on the inner side of the electrolytic paper, and the surface of the aluminum foil is provided with the lead plate body (1).

4. The capacitor according to claim 3, wherein the core package (5) comprises positive electrolytic paper (4) and negative electrolytic paper (10), the aluminum foil comprises a positive aluminum foil (3) and a negative aluminum foil (11), the positive aluminum foil (3) is arranged on the inner side of the positive electrolytic paper (4), the negative aluminum foil (11) is arranged on the inner side of the negative electrolytic paper (10), and the positive electrolytic paper (4) and the negative electrolytic paper (10) are laminated and then wound to form the core package (5).

5. A capacitor according to claim 4, wherein the lead plate body (1) comprises a positive lead plate and a negative lead plate, the positive lead plate is positioned on the inner surface of the positive aluminum foil (3), the negative lead plate is positioned on the inner surface of the negative aluminum foil (11), and the lead plate body (1) is connected with the terminal (2).

6. A capacitor according to claim 3, further comprising a case (8) and an end cap (9), wherein the core package (5) is disposed in the case (8), and the end cap (9) is disposed on the upper surface of the case (8).

7. A capacitor according to claim 3, wherein the lead plate body (1) is riveted to the aluminum foil through a riveting hole (12).