Method for covering insulating film on aluminium shell of electrolytic capacitor using anode processing technique
An electrolytic capacitor and anodic treatment technology, which is applied in the fields of capacitor casing/package, capacitor, capacitor manufacturing, etc., can solve the problems of inability to improve coating quality, discount of appearance, and increase of manufacturing man-hours
Inactive Publication Date: 2007-05-30
ABA CON INT
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Problems solved by technology
[0004] 1. The outer layer of the aluminum casing used in the existing electrolytic capacitors is pasted with PVC (polyvinyl chloride) or PET (polyethylene terephthalate) plastic film, which is cumbersome to cover and cannot Improve the quality of its coating, and the aesthetics of the appearance are also greatly reduced
[0005] 2. The plastic film attached to the outer layer of the existing aluminum shell will not meet the environmental protection requirements, and its second pollution will be inevitable
[0006] 3. The aluminum casing of the existing electrolytic capacitor is covered with the aforementioned PVC or PET plastic film, which must be individually wrapped, and the manufacturing hours will increase, which will result in an increase in cost
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[0022] Please refer to Figure 4, which is to soak numerous aluminum shells (4) in high-concentration sulfuric acid solution, and instantly shock the aluminum shells with high voltage to form a layer of aluminum oxide insulating film (5) on the surface. , and then the assembly (6) can be completed. According to the aforementioned steps, its implementation method is as follows:
[0023] Please refer to Fig. 5, the hanger 2 is hung with aluminum shells 11 of several electrolytic capacitors, the aluminum shells 11 are soaked in the high-concentration sulfuric acid solution 3, and the hanger 2 is an anode 21 with a positive potential, The high-concentration sulfuric acid solution 3 is connected to the cathode 31 with a negative potential. An appropriate high voltage is applied between the anode 21 and the cathode 31 for a moment to promote high temperature in the aluminum shell 11. At the same time, the positive potential oxygen ions and the high-concentration sulfuric acid solutio...
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Abstract
This invention relates to anode process method, which makes electrolyte capacitor aluminum shell covered with isolation film, which comprises the following steps: dipping aluminum shell into hydric sulphate with high concentration by hanging type and connecting anode onto hanging tool and cathode onto sulphate hydric liquid with high voltage for connection to make the aluminum shell generate high temperature by instant shock and to form alumind isolation layer with best thickness of 10 mum-15 mum to form isolation and protection function.
Description
technical field [0001] The invention relates to a method for covering an aluminum case of an electrolytic capacitor with an insulating film, specifically, a method for covering the aluminum case of an electrolytic capacitor with an insulating film by using an anodic treatment process. Background technique [0002] Please refer to Figure 3, the electrolytic capacitor 1, its manufacturing process is to combine the aluminum shell unit (1) with the rubber pad in advance and fill the electrolyte to complete the assembly (2), and then cover the aluminum shell with a layer of PVC or PET The periphery is coated (3); please refer to Fig. 1 and Fig. 2 again, the aluminum casing 11 is combined with the rubber pad 12, and the electrolyte 13 is filled in it, and then a layer of PVC is glued on the periphery of the aluminum casing 11 (polyvinyl chloride) or PET (polyethylene terephthalate) plastic film 14, and then the electrolytic solution 13 and the aluminum shell 11 are respectively co...
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IPC IPC(8): H01G9/08H01G13/00C25D11/08
Inventor 李正煌
Owner ABA CON INT