CN103199713A - Environment-friendly type bridge rectifier - Google Patents
Environment-friendly type bridge rectifier Download PDFInfo
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- CN103199713A CN103199713A CN2013101427103A CN201310142710A CN103199713A CN 103199713 A CN103199713 A CN 103199713A CN 2013101427103 A CN2013101427103 A CN 2013101427103A CN 201310142710 A CN201310142710 A CN 201310142710A CN 103199713 A CN103199713 A CN 103199713A
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Abstract
The invention provides an environment-friendly type bridge rectifier, and belongs to the technical field of power electronic devices. Structural technologies for the components such as an alternating-current electrode, a direct-current electrode, a soldering lug, a rectifying chip and an insulating filler are improved on the basis of the traditional bridge rectifier; and the content of harmful substances is far lower than the standards of RoHS (the Restriction of the use of Certain Hazardous Substances in Electrical and Electronic Equipment of the European Union), and the production cost is not increased, so that the environment friendliness of links including production, use and recovery is guaranteed. The environment-friendly type bridge rectifier meets the environmental protection requirements of product export.
Description
Technical field
The present invention relates to a kind of manufacturing technology of environment-friendly type bridge rectifier, belong to the novel electric power electric device technology field that state key is supported.
Background technology
The bridge rectifier of rated current capacity 2～50A mainly comprises: single-phases full bridge rectifier, three-phase full-wave bridge rectifier are the pillar products of power electronic technology, are widely used in the various instrument and equipments.The a tree name incomplete statistics, about 200,000,000 of annual domestic market demand amount, about 100,000,000 of amount for export.
European Union was on July 1st, 2011, announce RoHS instruction revised edition (2011/65/EU) " forbidding in electronic and electrical equipment, using the rules of some poisonous and harmful substance ", regulation was implemented from January 3rd, 2013,6 kinds of harmful substances such as lead, mercury, cadmium, Cr VI, Polybrominated biphenyl, PBDEs are limited, and the ratio of various harmful substance weight and product total weight is less than one thousandth.
Japan also promulgates that in calendar year 2001 relevant laws and regulations limit " lead " in the electronic product.The relevant laws and regulations of the U.S. require in the use material of electronic product, and the percentage by weight of " lead " surpasses 0.1% and must put on record, will sentence the enterprise of violating afore mentioned rules and fine heavily.
Under the spring tide of world's environmental protection, " electronics and IT products pollution management way " by the issue of 7 ministries and commissions such as the Ministry of Information industry, the Committee of Development and Reform, environmental protection, industry and commerce, quality inspection, commercial affairs, customs, come into force on March 1st, 2007, proposed six class poisonous and harmful substances such as restriction lead.In recent years, domestic since repeatedly serious environmental pollute the blood lead accident, make China to relating to plumbous product and relating to plumbous industry, strengthened renovation dynamics, large quantities of lead acid accumulator enterprises is halted.
In electrode, weld tabs, chip, inserts and the metal shell in the conventional bridge rectifier product, often contain six class harmful substances of the amount of transfiniting, content of heavy metal lead is particularly serious.The bridge rectifier that contains hazardous substance can not export to foreign countries, and producing and selling at home, reclaims, disassembles etc. in the link, all can cause serious pollution to environment.So traditional bridge rectifier product is badly in need of carrying out technological innovation, transforms traditional structure and technology, realizes the upgrading of product.
Summary of the invention
The invention provides a kind of manufacturing technology of environment-friendly type bridge rectifier, after the structure of traditional product and technology are improved, can produce a kind of environment-friendly type bridge rectifier.
The structure of bridge rectifier and manufacturing process, be with some (common is 4～6) rectification chips, by DC electrode and ac electrode, functional requirement according to different circuit is combined into bridge circuit structure, integrally welded with weld tabs between electrode and the rectification chip, irritate, fill out the insulated enclosure material, guarantee to be state of insulation between energising part and the shell, namely become product through burn-in test again.Its external form encapsulation pattern of bridge rectifier root a tree name is divided into plastic packaging and aluminum hull two big classes.The typical structure of plastic packaging bridge rectifier is shown in Figure of description 1; The typical structure of aluminum hull bridge rectifier is shown in Figure of description 2.
In Fig. 1 and Fig. 2, the DC electrode of product, ac electrode, its material are red copper, are the reason of anti-oxidant and easy welding, and the electrode surface plating is being coated with soldering-tin layer, contains the heavy metal lead of the amount of transfiniting in the soldering-tin layer of traditional product.The used weld tabs of traditional product, its lead content is about 37% of weld tabs gross weight.The structure of traditional homemade rectification chip: for positive and negative each plate electrode, a slice silicon chip with two weld tabs sintering in the middle of two plate electrodes, its electrode and weld tabs all contain a lot of lead, and lead tolerance reaches as high as 20% of chip total weight.The insulation filling material that traditional product is used is high molecular epoxy resin, its content of beary metal seldom, but fire retardant wherein contains higher Polybrominated biphenyl or PBDEs.The above-mentioned parts that contain hazardous substance are in process of producing product, be in contact with one another, rub, pollute the tooling device instrument of other parts and production line, made product comprise that everywhere shell all is stained with the adhesion harmful substance, seriously endangered the safety of production line worker, user and society.
Through last analysis as can be known, four kinds of main parts size such as the AC and DC electrode in traditional bridge rectifier, rectification chip, weld tabs, insulation filling material all contain six class harmful substances.The environment-friendly type bridge rectifier still is made up of four parts such as AC and DC electrode, rectification chip, weld tabs, insulation filling material, the feature part that is different from traditional product is, to four kinds of technology and technologies that parts have all adopted to go six class harmful substances such as alternating current-direct current electrode, rectification chip, weld tabs, insulation filling material, make the contained six class venomous injurant quality of various parts all far below the RoHS of European Union instruction standard, the total content of the end product harmful substance of being assembled out also can meet environmental protection standard.
The AC and DC electrode that the environment-friendly type bridge rectifier is used, the plating of having got rid of the traditional electrode surface is coated with leaded layer, uses the surface plating instead and is coated with nickel or pure stannum metal layer.Nickel and blunt tin are easily to weld metal, have antioxidation concurrently.The plating coating of electrode outer surface is very thin, and thickness of coating is 10～15um, used amount of metal seldom, manufacturing cost can not raise.
The weld tabs that the environment-friendly type bridge rectifier is used, do not use traditional lead welding sheet that has, use the alloy formula of research and development voluntarily instead, the employing tin copper alloy material is made, wherein the ratio of copper is between 0.7～3.5%, and its fusing point is regulated the content of copper between 215～220 ℃, can regulate fusing point and the welding stress of weld tabs, make it to adapt to different production requirements.
The rectification chip that the environment-friendly type bridge rectifier is used does not use traditional electrode rectification chip that has, and has adopted the electrodeless rectification chip of glassivation, claims " GPP " rectification chip again.This chip is the domestic new product that grew up in recent years, does not have electrode, and only directly fluting corrosion on silicon chip is inserted the glass dust sintering and formed in groove, and two surface evaporations of chip have the titanium bazar metal, and weldability is good.Its great advantage is not contain hazardous substance, and production cost is not high." GPP " rectification chip of all size that the environment-friendly type bridge rectifier is used, domestic complete can the provision in set together.
The insulation filling material that the environment-friendly type bridge rectifier is used not only possesses insulation function, also requires to have anti-flaming function.Its fire proofing has been got rid of traditional bromide fire retardant, changes to be adopted as organic silicon fibre retardant.Silicone flame retardant is as a family macromolecule fire retardant, has efficient, nontoxic, low cigarette, anti-drippage, characteristics such as pollution-free, is macromolecular material because of itself especially, and is therefore very little to the performance impact of product.Its fire retardant mechanism is, organosilicon generates carborundum when burning, and the volatile matter that this carborundum separator can stop burning to generate escapes, and starvation contacts with resin, prevents that melt from dripping, thereby reaches fire-retardant purpose.Because fire retardant only accounts for seldom ratio in the used insulation filling material of product, do not influence production cost after the improvement, but the influence of environment is improved.
By technique scheme, the environment-friendly type bridge rectifier sample of producing, through the detection unit testing of qualification is arranged, list test content value and the RoHS of the European Union instruction limitation standard value of each harmful substance in following table now.From following table as can be known, sample test value is far below the RoHS of European Union instruction limitation standard.
To sum up, the present invention is on the basis of conventional bridge rectifier, improved the structural manufacturing process technology of parts such as alternating current-direct current electrode, weld tabs, rectification chip, insulation filling material, harmful substance contents is far below the RoHS of European Union instruction limitation standard, production cost does not increase, and has guaranteed producing, use, reclaiming the feature of environmental protection of disassembling each link.Meet the environmental requirement of products export.
Description of drawings
Fig. 1, plastic packaging bridge rectifier typical structure profile.Among the figure: A is DC electrode, and B is ac electrode, and C is rectification chip, and D is weld tabs, and E is the insulation filling material.
Fig. 2, aluminum hull bridge rectifier typical structure profile.Among the figure: A is the aluminium shell, and B is insulating support, and C is DC electrode, and D is rectification chip, and E is weld tabs, and F is ac electrode, and G is the insulation filling material.
Embodiment
The present invention is improved only to be the structural manufacturing process technology of conventional bridge rectifier parts, so the agent structure of environment-friendly type bridge rectifier does not change, the structure of plastic packaging environment-friendly type bridge rectifier can be continued to use Figure of description 1, and the structure of aluminum hull environment-friendly type bridge rectifier can be continued to use Figure of description 2.
The equipment that produces instruments of conventional bridge rectifier, production process, measuring technology can be continued to use in the environment-friendly type bridge rectifier.
Specification is finished.
Claims (5)
1. environment-friendly type bridge rectifier, it is characterized in that: described environment-friendly type bridge rectifier is made up of four parts such as alternating current-direct current electrode, rectification chip, weld tabs, insulation filling material, each parts has all adopted technology and the technology of going six class harmful substances, makes all low RoHS of European Union instruction standards that is distal to of the contained six class venomous injurant quality of various parts..
2. environment-friendly type bridge rectifier according to claim 1 is characterized in that: the AC and DC electrode of described environment-friendly type bridge rectifier, and the surface plating is coated with nickel or pure stannum metal layer, and thickness of coating is 10～15um.
3. environment-friendly type bridge rectifier according to claim 1 is characterized in that: the weld tabs of described environment-friendly type bridge rectifier, and adopt tin copper alloy material to make, wherein the ratio of copper is between 0.7～3.5%.
4. environment-friendly type bridge rectifier according to claim 1 is characterized in that: the rectification chip of described environment-friendly type bridge rectifier, the electrodeless rectification chip of employing glassivation.
5. environment-friendly type bridge rectifier according to claim 1, it is characterized in that: the insulation filling material of described environment-friendly type bridge rectifier, wherein bromide fire retardant changes organic silicon fibre retardant into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101427103A CN103199713A (en) | 2013-04-09 | 2013-04-09 | Environment-friendly type bridge rectifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101427103A CN103199713A (en) | 2013-04-09 | 2013-04-09 | Environment-friendly type bridge rectifier |
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| CN103199713A true CN103199713A (en) | 2013-07-10 |
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| CN2013101427103A Pending CN103199713A (en) | 2013-04-09 | 2013-04-09 | Environment-friendly type bridge rectifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111739808A (en) * | 2020-07-07 | 2020-10-02 | 黄山市恒悦电子有限公司 | Environment-friendly bolt type power electronic rectification chip forming process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201780973U (en) * | 2010-07-29 | 2011-03-30 | 上海美高森半导体有限公司 | Composite inner passivated layer structure of silicon rectifier |
| US20110076800A1 (en) * | 2009-09-30 | 2011-03-31 | Renesas Electronics Corporation | Manufacturing method of semiconductor device |
| CN102637747A (en) * | 2012-04-05 | 2012-08-15 | 祁门县硅鼎电子元件厂 | Double-copper-electrode rectifying tube chip made of coated environment-friendly material, and coating process |
-
2013
- 2013-04-09 CN CN2013101427103A patent/CN103199713A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110076800A1 (en) * | 2009-09-30 | 2011-03-31 | Renesas Electronics Corporation | Manufacturing method of semiconductor device |
| CN201780973U (en) * | 2010-07-29 | 2011-03-30 | 上海美高森半导体有限公司 | Composite inner passivated layer structure of silicon rectifier |
| CN102637747A (en) * | 2012-04-05 | 2012-08-15 | 祁门县硅鼎电子元件厂 | Double-copper-electrode rectifying tube chip made of coated environment-friendly material, and coating process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111739808A (en) * | 2020-07-07 | 2020-10-02 | 黄山市恒悦电子有限公司 | Environment-friendly bolt type power electronic rectification chip forming process |
| CN111739808B (en) * | 2020-07-07 | 2024-03-29 | 黄山市恒悦电子有限公司 | Forming process of environment-friendly bolt type power electronic rectification chip |
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Application publication date: 20130710 |