CN102142320A - Manufacturing method for improving performance stability of small-sized bolt-type aluminium electrolytic capacitor - Google Patents
Manufacturing method for improving performance stability of small-sized bolt-type aluminium electrolytic capacitor Download PDFInfo
- Publication number
- CN102142320A CN102142320A CN 201010586599 CN201010586599A CN102142320A CN 102142320 A CN102142320 A CN 102142320A CN 201010586599 CN201010586599 CN 201010586599 CN 201010586599 A CN201010586599 A CN 201010586599A CN 102142320 A CN102142320 A CN 102142320A
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- China
- Prior art keywords
- core bag
- thimble
- cover board
- cover plate
- electrolytic capacitor
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Abstract
The invention relates to a manufacturing method for improving the performance stability of a small-sized bolt-type aluminium electrolytic capacitor. The method is characterized by comprising the following steps of: straightening a positive conductive foil strip and a negative conductive foil strip of a core bag, and then carrying out laser welding on the positive conductive foil strip and the negative conductive foil strip with a corresponding positive electrode and a corresponding negative electrode on a cover board respectively; putting the core bag into an aluminium shell, and pressing and fixing the core bag, wherein a bottom central hole of the core bag is required to be aligned with an ejector pin at the bottom of the aluminium shell in the process of putting the core bag into the aluminium shell and pressing and fixing the core bag; and inserting the ejector pin of the cover board into an upper central hole and pressing the ejector pin after aligning the ejector pin of the cover board with the upper central hole of the core bag, and then adding a seal ring to the cover board for sealing. The method has the advantages that the service life of a product is prolonged and fraction defective is reduced.
Description
Technical field
The present invention relates to a kind of manufacturing process that improves small size screw bolt-type aluminium electrolytic capacitor stability, belong to the aluminium electrolytic capacitor technical field.
Background technology
The screw bolt-type aluminium electrolytic capacitor generally is applied to equipment such as various power supplys, frequency converter, electric welding machine, wind power generation, purposes is very extensive, at present this product size at home the overwhelming majority still with reference to the standard of some Japan-funded enterprises (as: nichicon chemicon), but along with the development of device miniaturization trend, a lot of large scale product incompatibility requirements.The miniaturization product must be selected high specific volume electrode foil material for use, though this kind material reduced volume significantly has the product of increasing impedance, causes the shortcoming of product heat dispersion difference.
At present, in existing screw bolt-type aluminium electrolytic capacitor production technology, adopt mechanical punching riveted joint cover plate, the core bag is fixed on technology in the aluminum hull with solid gum.The riveting portion impedance of mechanical punching riveted joint cover plate is big, and caloric value is big, and durability of products is affected.In the technology that with solid gum the core bag is fixed in the aluminum hull, operator is put into high temperature furnace with solid gum and is melted, then with the glue after the fusing of aluminum hull splendid attire, again the core bag is put into aluminum hull and seal,, and in this operation process, have certain danger because solid gum embraces the core bag and cause the product thermal diffusivity not good, easily hand is scalded, and encapsulating amount, the impurity composition in the glue are difficult to control, and the consistency of product quality can not get guaranteeing.
Summary of the invention
The purpose of this invention is to provide a kind ofly dwindle small product size, enhance product performance, reduce production process, stabilized product quality, the screw bolt-type aluminium electrolytic capacitor manufacture method of enhancing productivity.
In order to achieve the above object, technical scheme of the present invention has provided a kind of manufacture method that improves small size screw bolt-type aluminium electrolytic capacitor stability, it is characterized in that step is:
Step 1, with just the leading chaff and negative lead chaff and smear directly of core bag, will just lead chaff more respectively and bear and lead positive pole and negative pole corresponding on chaff and the cover plate and carry out laser welding;
Step 2, open bottom centre hole and central upper portion hole respectively at the bottom and the top of core bag, in the bottom of aluminum hull thimble is set, the core bag is put into aluminum hull and be fixed, in this process, the thimble of aluminum hull bottom will be aimed in the bottom centre hole of core bag;
Step 3, on the cover board the cover plate thimble is set, behind the central upper portion hole with cover plate thimble aligned with core bag, inserts the cover plate thimble in the central upper portion hole and compress, on the cover board add sealing ring subsequently and seal.
Laser welding technology of the present invention is with mechanical punching before, and machine riveting cover plate two procedures unites two into one, and laser welding impedance little (impedance drops to 0.01～0.015m Ω by original 0.02～0.03m Ω), and caloric value is low, and life of product obtains extending.The encapsulating technology is not to adopt the cover plate and the inner aluminum hull that has thimble that have thimble to replace solid gum before, and this technology helps the product heat radiation, and properties of product are stablized.Through test, the fraction defective of product is reduced to 1% by original 3%, and the life-span of product has prolonged 20%.
Description of drawings
Fig. 1 is an aluminum electrolytic capacitor cover plate laser welding schematic diagram;
Fig. 2 is an aluminium electrolytic capacitor core bag schematic diagram;
Fig. 3 is an aluminium electrolytic capacitor aluminum hull schematic diagram.
Embodiment
Specify the present invention below in conjunction with drawings and Examples.
Embodiment
As Fig. 1, Fig. 2 and shown in Figure 3, a kind of manufacture method that improves small size screw bolt-type aluminium electrolytic capacitor stability provided by the invention, step is:
Step 1, with just the leading chaff 3 and negatively lead chaff 4 and smear directly of core bag, will just lead chaff 3 more respectively and bear and lead positive pole 1 and negative pole 2 corresponding on chaff 4 and the cover plate and carry out laser welding;
Annotate: the laser welder parameter:
| Optical maser wavelength | 1064nm |
| The maximum laser power output | 450W |
| The maximum laser pulse energy | 100J |
| Optical fiber output quantity | Maximum 4 the tunnel, but time beam split and energy beam split |
| Pulse duration | ≤50ms |
| Laser frequency | ≤200Hz |
| The optical fiber core diameter | 0.6mm |
| The main frame power consumption | 20KW |
| Electricity needs | Three-phase 380V ± 5% 50Hz, air circuit 40A |
| Control system | PFCS laser power real-time feedback system |
| The close-loop feedback control function | The laser power feedback is arranged |
| The type of cooling | Water-cooled |
| External cooling-water machine power consumption | 7.5P be the 6.5KW/380V/ three-phase |
| The aiming location | Ruddiness indication (CCD, monitor apolegamy) |
| Overall dimension | 1500mm*610mm*1100mm |
The laser welding parameter:
1. pad: lead 11 points of paper tinsel welding, 4mm is with 10 points of interior welding around point in the middle of the rivet, rivet
Step 2, open bottom centre hole 6 and central upper portion hole 5 respectively at the bottom and the top of core bag, in the bottom of aluminum hull 10 thimble 9 is set, the core bag is put into aluminum hull 10 and be fixed, in this process, the thimble 9 of aluminum hull 10 bottoms will be aimed in the bottom centre hole 6 of core bag;
Step 3, on the cover board cover plate thimble 7 is set, behind the central upper portion hole 5 with cover plate thimble 7 aligned with core bags, inserts cover plate thimble 7 in the central upper portion holes 5 and compress, on the cover board add sealing ring subsequently and seal.
Claims (1)
1. manufacture method that improves small size screw bolt-type aluminium electrolytic capacitor stability is characterized in that step is:
Step 1, with just the leading chaff (3) and negative lead chaff (4) and smear directly of core bag, will just lead chaff (3) more respectively and bear and lead positive pole (1) and negative pole (2) corresponding on chaff (4) and the cover plate and carry out laser welding;
Step 2, open bottom centre hole (6) and central upper portion hole (5) respectively at the bottom and the top of core bag, in the bottom of aluminum hull (10) thimble (9) is set, the core bag is put into aluminum hull (10) and be fixed, in this process, the thimble (9) of aluminum hull (10) bottom will be aimed in the bottom centre hole (6) of core bag;
Step 3, on the cover board cover plate thimble (7) is set, behind the central upper portion hole (5) with cover plate thimble (7) aligned with core bag, inserts cover plate thimble (7) in the central upper portion hole (5) and compress, on the cover board add sealing ring subsequently and seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010586599 CN102142320A (en) | 2010-12-14 | 2010-12-14 | Manufacturing method for improving performance stability of small-sized bolt-type aluminium electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010586599 CN102142320A (en) | 2010-12-14 | 2010-12-14 | Manufacturing method for improving performance stability of small-sized bolt-type aluminium electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102142320A true CN102142320A (en) | 2011-08-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010586599 Pending CN102142320A (en) | 2010-12-14 | 2010-12-14 | Manufacturing method for improving performance stability of small-sized bolt-type aluminium electrolytic capacitor |
Country Status (1)
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| CN (1) | CN102142320A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522199A (en) * | 2011-12-19 | 2012-06-27 | 上海一点点电子科技有限公司 | Fixing method of bolt-type aluminum electrolytic capacitor core package with good heat dispersion |
| CN102543443A (en) * | 2011-12-19 | 2012-07-04 | 上海一点点电子科技有限公司 | Winding and fixing method for bolt-type aluminum electrolytic capacitor core cladding |
| CN102723197A (en) * | 2012-06-05 | 2012-10-10 | 南通新江海动力电子有限公司 | Welding method for double core bags of thin film capacitor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101106020A (en) * | 2006-07-12 | 2008-01-16 | 南通海立电子有限公司 | Capacitor core cladding fixing method |
| CN201629236U (en) * | 2010-03-31 | 2010-11-10 | 深圳江浩电子有限公司 | Aluminum electrolytic capacitor provided with installing and fixing structure at bottom |
-
2010
- 2010-12-14 CN CN 201010586599 patent/CN102142320A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101106020A (en) * | 2006-07-12 | 2008-01-16 | 南通海立电子有限公司 | Capacitor core cladding fixing method |
| CN201629236U (en) * | 2010-03-31 | 2010-11-10 | 深圳江浩电子有限公司 | Aluminum electrolytic capacitor provided with installing and fixing structure at bottom |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522199A (en) * | 2011-12-19 | 2012-06-27 | 上海一点点电子科技有限公司 | Fixing method of bolt-type aluminum electrolytic capacitor core package with good heat dispersion |
| CN102543443A (en) * | 2011-12-19 | 2012-07-04 | 上海一点点电子科技有限公司 | Winding and fixing method for bolt-type aluminum electrolytic capacitor core cladding |
| CN102723197A (en) * | 2012-06-05 | 2012-10-10 | 南通新江海动力电子有限公司 | Welding method for double core bags of thin film capacitor |
| CN102723197B (en) * | 2012-06-05 | 2014-09-17 | 南通新江海动力电子有限公司 | Welding method for double core bags of thin film capacitor |
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Application publication date: 20110803 |