CN105489417A - Direct-current high-power electrical appliance switch redundancy arc-extinguishing device - Google Patents
Direct-current high-power electrical appliance switch redundancy arc-extinguishing device Download PDFInfo
- Publication number
- CN105489417A CN105489417A CN201610084410.8A CN201610084410A CN105489417A CN 105489417 A CN105489417 A CN 105489417A CN 201610084410 A CN201610084410 A CN 201610084410A CN 105489417 A CN105489417 A CN 105489417A
- Authority
- CN
- China
- Prior art keywords
- arc
- insulation shell
- appliance switch
- permanent magnets
- direct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention provides a direct-current high-power electrical appliance switch redundancy arc-extinguishing device which comprises at least one movable contact, at least one stationary contact and an insulation shell. The movable contact and the stationary contacts respectively extend into the insulation shell. Two permanent magnets are fixed to the outer wall of the insulation shell, and a plurality of layers of grid plates extend on the inner wall of the insulation shell around the stationary contacts. The two permanent magnets produce a magnetic field, so that electric arcs are subjected to the effect of a Lorenz force, motion directions of the electric arcs offset, motion trails become long, and the purposes of quick electric arc cooling and extinguishing are achieved. In addition, the offset electric arcs are divided into a plurality of small electric arcs through the grid plate structures, and accordingly the arc extinguishing purpose is achieved. Compared with the prior art, the direct-current high-power electrical appliance switch redundancy arc-extinguishing device has the advantages of being longer in electrical endurance, high in safety and reliability and the like.
Description
Technical field
The present invention relates to a kind of redundancy arc-control device, particularly a kind of redundancy arc-control device of DC high-power appliance switch.
Background technology
High-power electric appliance D.C. contactor switch is commonly used in new-energy automobile field, but DC high-power electrical contact switch is when switching, electric arc can be produced, the dynamic and static contact of electric arc meeting ablation, thus cause the defects such as short, the reliable breaking capacity of electric life is poor, coefficient of safety is low, affect the electric life of product, serious meeting causes the calcination breaking out of fire of product.
For electric arc, the mode such as hydrogen, magnetic blow-out is mainly adopted to carry out arc extinguishing both at home and abroad at present, mainly hydrogen danger is larger for the shortcoming that they exist, cost compare is high, the out-of-shape of magnet steel is difficult to shaping etc. when manufacturing and using mould, but because they are all adopt relatively independent arc extinguishing design, so cannot ensure the security reliability of product.
Summary of the invention
Technical problem to be solved by this invention is to provide the DC high-power appliance switch redundancy arc-control device that a kind of arc quenching effect is good, coefficient of safety is high.
For solving the problems of the technologies described above, the invention provides a kind of DC high-power appliance switch redundancy arc-control device, comprise at least one moving contact, at least one fixed contact, insulation shell, described moving contact and described fixed contact stretch in insulation shell respectively;
Insulation shell outer wall is fixed with two pieces of permanent magnets, and the insulation shell inwall around described fixed contact is extended with some layers of grid.
After adopting such structure, two permanent magnets produce magnetic field, electric arc is made to be subject to the effect of Lorentz force, make that the direction of motion of electric arc offsets, movement locus is elongated thus reach to cool electric arc fast, the object of extinguish arcs, and reach the electric arc after skew by grid structure and divide and be broken into some little electric arc, thus reach the object of arc extinguishing.
This DC high-power appliance switch redundancy arc-control device, according to the requirement of fail safe, reliability, has the advantages such as higher electric life, safety and reliability compared with original technology.
Technology contents for a better understanding of the present invention, below by this DC high-power appliance switch redundancy arc-control device referred to as this arc-control device.
The insulation shell of this arc-control device is cylindrical shape, and described moving contact and described fixed contact stretch in insulation shell from the both sides end face of insulation shell respectively;
The cross sectional shape of permanent magnet is arc, and two pieces of arc-shaped permanent magnets are fixed on the lateral wall of insulation shell relatively, makes the synonyms pole of two pieces of permanent magnets relative.
After adopting such structure, optimize the structure of insulation shell and permanent magnet, the magnetic field force that electric arc is subject in insulation shell evenly.
The central angle of the arc-shaped permanent magnet kernel of section line of this arc-control device is 110 °; After adopting such structure, can ensure that the center position magnetic field intensity of two permanent magnets is maximum completely, and distance center line both sides bend cambered surface and enter the court strong relatively weak, the reasonability of this kind of structural design can ensure that the movement locus of electric arc all the time can near insulation shell inwall and away from fixed contact.
Accompanying drawing explanation
Fig. 1 is the stereogram of this arc-control device embodiment.
Fig. 2 is the structural representation of this arc-control device embodiment insulation shell and fixed contact.
Fig. 3 is magnetic quenching schematic diagram.
Embodiment
As shown in Fig. 1 to 2
This arc-control device comprises a moving contact 1, two fixed contacts 2, insulation shell 3 and two magnet steel 4.
Insulation shell is divided into upper cover and lower casing two parts (lower casing of insulation shell is only shown in Fig. 2), insulation shell 3 is cylindrical shape, insulation shell 3 can select 95 alumina ceramic materials that density is large and intensity is high, moving contact 1 and two fixed contacts 2 stretch in insulation shell 3 from the both sides end face of insulation shell 3 respectively, insulation shell 3 inwall around two fixed contacts 2 is extended with multilayer grid 31 respectively, and insulation shell 3 inwall adopts integrated structure with insulation grid 31.
Magnet steel 4 is curved thin plate shape, the neodymium iron boron that magnet steel 4 material selection magnetic-type is the strongest, and two pieces of arc magnet steel 4 opposite adhesive are on the lateral wall of insulation shell 3, and make the synonyms pole of two blocks of magnet steel 4 relative, the central angle of two pieces of arc magnet steel 4 kernel of section lines is all 110 °.
During use, two blocks of magnet steel 4 produce magnetic field, electric arc is made to be subject to the effect of Lorentz force, make arc motion track elongated thus reach to cool electric arc fast, the object (as shown in Figure 3) of extinguish arcs, and reach the electric arc do not extinguished to divide by grid 31 structure and be broken into some little electric arc, realize arc extinguishing further.
Above-described is only one embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, under the premise without departing from the principles of the invention, can also make some modification and improvement, and these also should be considered as belonging to protection scope of the present invention.
Claims (3)
1. a DC high-power appliance switch redundancy arc-control device, comprises at least one moving contact, at least one fixed contact, insulation shell, and described moving contact and described fixed contact stretch in insulation shell respectively, it is characterized by:
Insulation shell outer wall is fixed with two pieces of permanent magnets, and the insulation shell inwall around described fixed contact is extended with some layers of grid.
2. DC high-power appliance switch redundancy arc-control device according to claim 1, is characterized in that:
Described insulation shell is cylindrical shape, and described moving contact and described fixed contact stretch in insulation shell from the both sides end face of insulation shell respectively;
The cross sectional shape of permanent magnet is arc, and two pieces of arc-shaped permanent magnets are fixed on the lateral wall of insulation shell relatively, makes the synonyms pole of two pieces of permanent magnets relative.
3. DC high-power appliance switch redundancy arc-control device according to claim 2, is characterized in that:
The central angle of two pieces of arc-shaped permanent magnets is all 110 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610084410.8A CN105489417A (en) | 2016-02-05 | 2016-02-05 | Direct-current high-power electrical appliance switch redundancy arc-extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610084410.8A CN105489417A (en) | 2016-02-05 | 2016-02-05 | Direct-current high-power electrical appliance switch redundancy arc-extinguishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105489417A true CN105489417A (en) | 2016-04-13 |
Family
ID=55676337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610084410.8A Pending CN105489417A (en) | 2016-02-05 | 2016-02-05 | Direct-current high-power electrical appliance switch redundancy arc-extinguishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105489417A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899252A (en) * | 2018-07-25 | 2018-11-27 | 浙江环方汽车电器有限公司 | A kind of relay of efficient arc extinguishing |
| CN110517914A (en) * | 2019-09-24 | 2019-11-29 | 中国电子科技集团公司第四十研究所 | A kind of multi-functional arc-control device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011204480A (en) * | 2010-03-25 | 2011-10-13 | Panasonic Electric Works Co Ltd | Contact device |
| CN202712067U (en) * | 2012-07-02 | 2013-01-30 | 戴丁志 | Arc-quenching non-polar contactor |
| CN103515153A (en) * | 2013-08-07 | 2014-01-15 | 浙江宏舟新能源科技有限公司 | Reliable arcing system of non-polarity high-voltage direct current contactor |
| CN103560031A (en) * | 2013-11-15 | 2014-02-05 | 中国电子科技集团公司第四十研究所 | Permanent magnet arc extinction structure of transverse magnetic field |
| CN205406346U (en) * | 2016-02-05 | 2016-07-27 | 中国电子科技集团公司第四十研究所 | Redundant arc control device of high -power electric switch of direct current |
-
2016
- 2016-02-05 CN CN201610084410.8A patent/CN105489417A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011204480A (en) * | 2010-03-25 | 2011-10-13 | Panasonic Electric Works Co Ltd | Contact device |
| CN202712067U (en) * | 2012-07-02 | 2013-01-30 | 戴丁志 | Arc-quenching non-polar contactor |
| CN103515153A (en) * | 2013-08-07 | 2014-01-15 | 浙江宏舟新能源科技有限公司 | Reliable arcing system of non-polarity high-voltage direct current contactor |
| CN103560031A (en) * | 2013-11-15 | 2014-02-05 | 中国电子科技集团公司第四十研究所 | Permanent magnet arc extinction structure of transverse magnetic field |
| CN205406346U (en) * | 2016-02-05 | 2016-07-27 | 中国电子科技集团公司第四十研究所 | Redundant arc control device of high -power electric switch of direct current |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899252A (en) * | 2018-07-25 | 2018-11-27 | 浙江环方汽车电器有限公司 | A kind of relay of efficient arc extinguishing |
| CN110517914A (en) * | 2019-09-24 | 2019-11-29 | 中国电子科技集团公司第四十研究所 | A kind of multi-functional arc-control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160413 |
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| RJ01 | Rejection of invention patent application after publication |