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Tab terminal for electrolytic capacitor

A technology of electrolytic capacitors and terminals, applied in electrolytic capacitors, capacitor terminals, solid electrolytic capacitors, etc., can solve problems such as environmental pollution

Active Publication Date: 2012-07-11
KOHOKU KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since thermosetting resins such as epoxy resins usually contain halogens such as chlorine, problems of environmental pollution may arise during the manufacturing process of terminal blocks and when electronic materials such as capacitors using terminal blocks are disposed of.

Method used

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  • Tab terminal for electrolytic capacitor
  • Tab terminal for electrolytic capacitor
  • Tab terminal for electrolytic capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] As the lead member, lead-free tin-plated (plating thickness 12μm) Copper wire, cut the copper wire into 20mm length. In addition, as an aluminum core wire, use Aluminum wire, cut the aluminum core wire into a length of 9mm. Then, fix the lead wire and aluminum core wire cut to a specified length on each electrode of the arc welding device, squeeze the lead wire and aluminum core wire in the above state, and use plasma discharge for welding (voltage about 50V), and the lead wire and aluminum core wire Aluminum wire bonding. Thereafter, the end portion of the aluminum core wire was flattened by pressing to form a rolled portion, thereby obtaining a connection terminal for an electrolytic capacitor.

[0054] Chemiseal U-426B (manufactured by Chemitech Co., Ltd.) containing 1.0% by mass of an inorganic acid salt solution, Fine Cleaner FC315 (manufactured by Nippon Parkerizing Co., Ltd.), was prepared as an ultraviolet curable resin composition. Apply the prepared ultr...

Embodiment 2

[0056]In the said ultraviolet curable resin composition, the connection terminal was produced similarly to Example 1 except having used Anilox LCR0136 (made by Toagosei Co., Ltd.) instead of Chemiseal U-426B.

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Abstract

Disclosed are a tab terminal and a method for manufacturing the same according to which no tin whiskers are generated from a welded portion and no environmental problems arise, even when a lead that has been subjected to lead-free tin plating is directly employed in the tab terminal. A tab terminal for an electrolytic capacitor is formed by welding an aluminium core wire which has a rolled section to a lead whereof the surface has been subjected to lead-free tin plating, the vicinity of the welded portion of the lead and the aluminium core wire being covered by UV-curable resin.

Description

technical field [0001] The invention relates to a connection terminal used in an electrolytic capacitor. More specifically, the invention relates to a lead-free tin-plated connection terminal and a manufacturing method thereof. Background technique [0002] An electrolytic capacitor is constituted by forming a capacitor element in which an anode electrode foil and a cathode electrode foil are wound through a separator, a liquid electrolyte or a solid electrolyte is held in the capacitor element, and the capacitor element is accommodated in an outer case, and the anode electrode The foil is made of valve action metals such as tantalum and aluminum. In the above-mentioned electrolytic capacitor, the terminal for connecting each electrode to the outside can be connected to the anode electrode foil and the cathode electrode foil by a known method such as bonding or ultrasonic welding. [0003] The terminal for electrolytic capacitors has a structure in which an aluminum core wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/008H01G9/00H01G13/00
CPCH01G9/008H01G9/012H01G9/151H01G9/145H01G13/00
Inventor 吉泽修平横浜与志夫荒木治人石井太
Owner KOHOKU KOGYO CO LTD