JPS59201407A - Electrolytic condenser and its producing method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electrolytic capacitor and a method for manufacturing the same, and more particularly to a chip-type aluminum electrolytic capacitor with improved heat resistance and a method for manufacturing the same.

The structure of the conventional example and its problems The conventional persimmon chip type aluminum electrolytic cosidizer is
It is configured as shown in the figure. In other words, the element (1), in which the decomposed foil and the separator are wound and impregnated with the driving electrolyte, is housed in an aluminum case (2), sealed with an elastic sealant (3), and the cathode lead terminal is closed. (4)
Connect the aluminum case (2) to VC, connect the anode lead (5) to the anode lead terminal (6), and connect the aluminum case (2) and cathode lead terminal (6) to the insulating resin (7). They arrived at the same time.

In this case, although the insulating material (7) plays the role of reinforcing the seal, when immersed in a T-middle at 260°C for 10 seconds, the internal pressure rises due to vaporization of the electrolyte, making the elastic sealant (3) pushes up the resin (7), causing the bonded portion to come off or cracking, resulting in sealing failure and resulting in changes in properties.

Purpose of the Invention The present invention aims to eliminate such drawbacks of the conventional technology, and aims to mechanically strengthen the sealing part and improve heat resistance.
The target is

Structure of the Invention In order to achieve this object, the present invention provides a capacitor element in which an anode and a cathode foil are wound together with a separator and impregnated with an electrolyte, and a capacitor element is housed in the capacitor element, and an insulating layer is applied outwardly except for the bottom part in advance. A cylindrical metal case with a bottom is formed, an elastic sealing material is placed on the open end of the metal case, and the metal case is identified by four aperture parts, and this metal case is capped with a lead through hole, and the aperture recess of the metal case is covered with a lead through hole. The capacitor element has a metal P tab terminal having a convex concave portion on its side surface to fit into the capacitor element, and the lead of the capacitor element inserted through the lead through hole is connected to the metal P tab terminal.

With this configuration, the capacitor main body has insulation properties ensured by the insulating layer on the outer surface of the metal case, and the metal jump terminal is arranged at the open end of the metal case, and the metal +P socket terminal is connected to the aperture recess of the metal case. Since the concave parts are fitted, even if the capacitor body is placed in a high-temperature environment, the fixed parts will not come off or cracks will occur, and therefore the capacitor's thermal properties will be extremely low. Become.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 2. In Figure 2, an anode foil and a cathode foil are wound together with a separator, and a capacitor element 0υ is impregnated with a driving electrolyte.
is housed in a bottomed cylindrical metal case (Q) with an insulating layer (4) formed on the outer surface except for the bottom, and the lead (18) is connected to the inner surface of the metal case (I), and the cathode lead terminal is (Connect the cap to the bottom outer surface of the metal case, then place the elastic sealant α on the open end of the metal case, and draw the open end of the metal case by drawing the side surface of the metal case. Furthermore, the open end is covered with a metal + SEP anode terminal OQ having a through hole passing through the anode lead 4 and an insulating layer on the inner surface, and a metal + SEP anode terminal (
1 (Draw the side surface of e to align and fix the drawn concave part of the bottomed cylindrical case @ with the four drawn parts of the metal + SEP anode terminal uG, and lead out the anode lead αQ through the through hole. Connect the anode terminal 1.IQ to the metallurgist P knob, and fix the anode terminal 1.L electrically and mechanically.

In this way ((, because one side of the elastic sealing material u4 is covered with the metallurgical sepp anode terminal QQ and fixed to the metal case Qz with the four apertures, when the capacitor is exposed to high temperatures, the electrolyte Even if the internal pressure increases due to vaporization, the force exerted on the elastic sealing material can be held by the four orifices of the P tube anode terminal (il), making it possible to maintain the air activity of the sealing part. Since an insulating layer has been applied in advance to the surface of the metal case 4 and the inner surface of the metal +P anode terminal,
It is possible to maintain insulation between the metal + SEP anode terminal 1.1.

According to Table 1, the product of the present invention and the conventional product were soldered at 260°C.
The test data is shown after being immersed for 0 seconds.
That's 50 pieces.

According to the capacitor of Part 11, the sealing part is mechanically reinforced and consideration is given to the electrical insulation of the cable terminals, so the characteristics are not good. This has the effect of stabilizing the electrolytic capacitor, making it possible to obtain a highly heat-resistant electrolytic capacitor.

[Brief explanation of drawings]

Section 1 (a) and (b) are conventional chip-type aluminum electrolytic kelp: /+1'In'l ffn M side view and front view, Figure 2 (a) and (b) are parts of Mizumotori J. FIG. 2 is a side cross-sectional view and a front view of a chip-type aluminum electrolytic condenser according to an embodiment. (11)... Capacitor element, aa-... Aluminum case, (c)... Elastic sealing material, (, lΦ... Shade d
j terminal, scream... awakening, 1. lfj...metal 10P mechanical terminal, (I81...implicit lead, (Jsu...
...Insulating layer, bite...Insulating layer agent Yoshihiro Takeki

Claims (1)

[Scope of Claims] 1. A capacitor element formed by winding an anode foil and a cathode foil together with a 1+\layer and impregnating it with an electrolytic solution, storing this capacitor element, and forming an insulating layer on the outer surface except the bottom in advance,
An elastic sealing material is placed on the open end of the cylindrical metal case with a glued bottom, and the four aperture parts of the metal case are covered with lead through holes. The electrolytic capacitor has four aperture parts on the surface of the capacitor, and has a metallurgical sep terminal, and connects the lead of the capacitor element, which is inserted through the lead through hole described in 1jij, to the metal + jap terminal. 2. The electrolytic capacitor according to item 1 of the special requirements, characterized in that the metallurgical sep terminal has an insulating layer formed on the inner surface. 3. The anode foil and the cathode foil are wound together with t r< A process in which a capacitor element impregnated with a spinning electrolyte is housed in a bottomed cylindrical metal case with an insulating layer formed on the outer periphery except for the bottom, an elastic sealing material is placed on the open end, and the capacitor element is sealed by drawing. a step of capping a metallurgical YAP terminal having a lead through hole; a step of drawing a side surface of the metallurgical YAP terminal so as to fit into a drawing recess of the metal case formed by the drawing process; A method for manufacturing an electrolytic capacitor, which comprises the step of connecting the lead of a capacitor element inserted through a lead through hole and a metallurgical septum terminal.