CN205406346U - Redundant arc control device of high -power electric switch of direct current - Google Patents
Redundant arc control device of high -power electric switch of direct current Download PDFInfo
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- CN205406346U CN205406346U CN201620119276.6U CN201620119276U CN205406346U CN 205406346 U CN205406346 U CN 205406346U CN 201620119276 U CN201620119276 U CN 201620119276U CN 205406346 U CN205406346 U CN 205406346U
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- arc
- insulation shell
- control device
- electric
- stationary contact
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Abstract
The utility model provides a redundant arc control device of high -power electric switch of direct current, including at least one movable contact, at least one stationary contact, insulating housing, the movable contact with the stationary contact stretches into in the insulating housing respectively, the insulating housing outer wall is fixed with two permanent magnets, it has a plurality of layers of bars piece to extend on the insulating housing inner wall around the stationary contact. Two permanent magnets produce magnetic fields, make electric arc receive lorentz force's effect, thereby make that direction of motion skew, the movement track of electric arc are elongated to reach quick cooling electric arc, extinguish the purpose of electric arc, reach to divide the electric arc after the skew through the bars chip architecture moreover to become a plurality of little electric arcs absolutely to reach the mesh of arc extinguishing. This redundant arc control device of high -power electric switch of direct current has advantages such as higher electric life, security and reliability according to the requirement of security, reliability, compared with the prior art.
Description
Technical field
This utility model relates to a kind of redundancy arc-control device, particularly to the redundancy arc-control device of a kind of DC high-power electric 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 switchs when switching, electric arc can be produced, the electric arc meeting dynamic and static contact of ablation, thus causing the defects such as electric life breaking capacity short, reliable is poor, safety coefficient is low, affecting 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, it is relatively larger that the shortcoming that they exist is mainly hydrogen danger, cost is higher, the in irregular shape of magnet steel is difficult to molding etc. when manufacturing and using mould, but it is all adopt relatively independent arc extinguishing design due to them, so the security reliability of product cannot be ensured.
Utility model content
Technical problem to be solved in the utility model is to provide the DC high-power electric switch redundancy arc-control device that a kind of arc quenching effect is good, safety coefficient is high.
For solving above-mentioned technical problem, this utility model provides a kind of DC high-power electric switch redundancy arc-control device, is respectively protruding in insulation shell including at least one movable contact, at least one stationary contact, insulation shell, described movable contact and described stationary contact；
Insulation shell outer wall is fixed with two pieces of permanent magnets, and the insulation shell inwall around described stationary 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, the direction of motion making electric arc offsets, movement locus is elongated thus reaching quickly to cool down electric arc, extinguish the purpose of electric arc, and reach the electric arc disjunction after skew by grid structure and become some little electric arc, thus reaching the purpose of arc extinguishing.
The requirement according to safety, reliability of this DC high-power electric switch redundancy arc-control device, has the advantages such as higher electric life, safety and reliability compared with original technology.
In order to be better understood from technology contents of the present utility model, below by this DC high-power electric 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 movable contact and described stationary 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 relatively fixed on the lateral wall of insulation shell, and the synonyms pole making two pieces of permanent magnets is relative.
After adopting such structure, optimize the structure of insulation shell and permanent magnet, make 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, the center position magnetic field intensity that two permanent magnets can be completely secured is maximum, and distance center line both sides bending cambered surface is entered the court relatively weak by force, 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 stationary contact.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of this arc-control device embodiment.
Fig. 2 is the structural representation of this arc-control device embodiment insulation shell and stationary contact.
Fig. 3 is magnetic quenching schematic diagram.
Detailed description of the invention
If Fig. 1 is to shown in 2
This arc-control device includes 1, two stationary contacts 2 of a movable contact, insulation shell 3 and two magnet steel 4.
Insulation shell is divided into upper cover and two parts of lower casing (only illustrating the lower casing of insulation shell in Fig. 2), insulation shell 3 is cylindrical shape, insulation shell 3 can select 95 alumina ceramic materials that density is big and intensity is high, movable contact 1 and two stationary contacts 2 stretch in insulation shell 3 from the both sides end face of insulation shell 3 respectively, having each extended over multilamellar grid 31 on insulation shell 3 inwall around two stationary contacts 2, 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 the synonyms pole making two blocks of magnet steel 4 is relative, and 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 reaching quickly to cool down electric arc, extinguish the purpose (as shown in Figure 3) of electric arc, and reach the electric arc disjunction do not extinguished to become some little electric arc by grid 31 structure, realize arc extinguishing further.
Above-described is only a kind of embodiment of the present utility model; it should be pointed out that, for the person of ordinary skill of the art, under the premise without departing from this utility model principle; can also making some modification and improvement, these also should be regarded as belonging to protection domain of the present utility model.
Claims (3)
1. a DC high-power electric switch redundancy arc-control device, is respectively protruding in insulation shell including at least one movable contact, at least one stationary contact, insulation shell, described movable contact and described stationary contact, it is characterized by:
Insulation shell outer wall is fixed with two pieces of permanent magnets, and the insulation shell inwall around described stationary contact is extended with some layers of grid.
2. DC high-power electric switch redundancy arc-control device according to claim 1, is characterized in that:
Described insulation shell is cylindrical shape, and described movable contact and described stationary 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 relatively fixed on the lateral wall of insulation shell, and the synonyms pole making two pieces of permanent magnets is relative.
3. DC high-power electric 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 |
|---|---|---|---|
| CN201620119276.6U CN205406346U (en) | 2016-02-05 | 2016-02-05 | Redundant arc control device of high -power electric switch of direct current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620119276.6U CN205406346U (en) | 2016-02-05 | 2016-02-05 | Redundant arc control device of high -power electric switch of direct current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205406346U true CN205406346U (en) | 2016-07-27 |
Family
ID=56451119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620119276.6U Expired - Fee Related CN205406346U (en) | 2016-02-05 | 2016-02-05 | Redundant arc control device of high -power electric switch of direct current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205406346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489417A (en) * | 2016-02-05 | 2016-04-13 | 中国电子科技集团公司第四十研究所 | Direct-current high-power electrical appliance switch redundancy arc-extinguishing device |
-
2016
- 2016-02-05 CN CN201620119276.6U patent/CN205406346U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489417A (en) * | 2016-02-05 | 2016-04-13 | 中国电子科技集团公司第四十研究所 | Direct-current high-power electrical appliance switch redundancy arc-extinguishing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 Termination date: 20210205 |