A long-life patch electrolytic capacitor for an aluminum-based circuit board

A technology of electrolytic capacitors and circuit boards, used in capacitors, capacitor parts, capacitor shells/packages, etc.

Inactive Publication Date: 2019-01-15
CHONGQING LINMENG ELECTRONICS SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing chip electrolytic capacitors that need to leave a large space around to install a radiator with better heat dissipation, the present invention proposes a long-life chip electrolytic capacitor for aluminum-based circuit boards to solve this problem , its positive effect is: adopting a long-life SMD electrolytic capacitor for aluminum-based circuit boards does not need to increase the size of the SMD electrolytic capacitor, nor does it require a large space around the SMD electrolytic capacitor, and it can be directly connected to the SMD electrolytic capacitor. The heat dissipation soldering piece connected to the shell of the chip electrolytic capacitor is welded on the aluminum substrate, and the aluminum substrate is used to help dissipate heat, which greatly improves the service life of the chip electrolytic capacitor, which is equivalent to greatly improving the life of the entire circuit board, and the cost is low

Method used

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  • A long-life patch electrolytic capacitor for an aluminum-based circuit board

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Embodiment Construction

[0009] exist figure 1 In the embodiment, we further illustrate the present invention by taking the implementation of a long-life chip electrolytic capacitor for aluminum-based circuit boards as an example:

[0010] figure 1 It is a structural schematic diagram of a long-life SMD electrolytic capacitor for aluminum-based circuit boards of the present invention. The aluminum shell 1 is the shell of the SMD electrolytic capacitor we usually use; The inner core of a chip electrolytic capacitor, including positive aluminum foil, negative lead aluminum foil, positive pin, negative pin, tape, electrolytic paper isolation layer material, isolation paper, etc., is the core part of a chip electrolytic capacitor. Its production process is similar to that of ordinary electrolytic capacitors. The capacitors are basically the same; the rubber sealing plug 3 (which can be seen when the aluminum shell is cut open) is used to prevent electrolyte leakage, the base 4 is made of insulating mater...

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Abstract

A long-life patch electrolytic capacitor for an aluminum-based circuit board comprises an aluminum shell, a core, a rubber sealing plug, a base, a positive electrode solder pin, a negative electrode solder pin, a left heat dissipation pad and a right heat dissipation pad, wherein the aluminum shell is connected with the left heat dissipation pad and the right heat dissipation pad, and the left heat dissipation pad and the right heat dissipation pad are used for soldering on the left heat dissipation pad and the right heat dissipation pad of the aluminum substrate; The long-life patch electrolytic capacitor for an aluminum-based circuit board overcomes the shortcoming that the prior patch electrolytic capacitor needs a large space around to install a heat sink with good heat dissipation, and is particularly suitable for the situation where an aluminum substrate is used as a circuit board.

Description

Technical field [0001] The invention relates to a chip electrolytic capacitor, in particular to a long-life chip electrolytic capacitor in which the shell of the chip electrolytic capacitor on an aluminum-based circuit board is welded on the aluminum-based circuit board through a welding sheet. Background technique [0002] Aluminum electrolytic capacitor is a polarized capacitor. Its positive plate is made of aluminum foil, which is immersed in the electrolyte for anodic oxidation treatment. A layer of aluminum oxide film is formed on the surface of the aluminum foil, and its thickness is generally 0.02 - 0.03 microns. , this layer of oxide film is the insulating medium between the positive and negative plates. The negative electrode of the capacitor is composed of electrolyte. The electrolyte is generally composed of boric acid, ammonia water, ethylene glycol, etc. In order to facilitate the manufacture of capacitors, the electrolyte solution is usually impregnated on spec...

Claims

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Application Information

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IPC IPC(8): H01G2/06H01G2/08H01G9/10
CPCH01G9/10H01G2/06H01G2/08
Inventor 任永斌
Owner CHONGQING LINMENG ELECTRONICS SCI & TECH CO LTD
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